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  <xsd:element abstract="true" id="siri_InvestmentsTextualAbstract" name="InvestmentsTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_IssuanceOfCommonStockToEmployeesAndEmployeeBenefitPlansNetOfForfeitures" name="IssuanceOfCommonStockToEmployeesAndEmployeeBenefitPlansNetOfForfeitures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="siri_IssuanceOfCommonStockToEmployeesAndEmployeeBenefitPlansNetOfForfeituresShares" name="IssuanceOfCommonStockToEmployeesAndEmployeeBenefitPlansNetOfForfeituresShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_IssuanceOfCommonStockUponExerciseOfWarrants" name="IssuanceOfCommonStockUponExerciseOfWarrants" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_LengthOfPrepaidSubscriptionsTerm" name="LengthOfPrepaidSubscriptionsTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_LibertyMediaMember" name="LibertyMediaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_LongTermDebtExcludingRelatedPartyDebt" name="LongTermDebtExcludingRelatedPartyDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_LongTermDebtObligationsMember" name="LongTermDebtObligationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_LongTermRelatedPartyDebt" name="LongTermRelatedPartyDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="siri_LossOnEquityInvestments" name="LossOnEquityInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_ManufacturingCompanyAxis" name="ManufacturingCompanyAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_ManufacturingCompanyDomain" name="ManufacturingCompanyDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_MarketingAndDistributionMember" name="MarketingAndDistributionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_MaximumConsolidatedLeverage" name="MaximumConsolidatedLeverage" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_MaximumPriceForPurchaseOfNote" name="MaximumPriceForPurchaseOfNote" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_MinimumPriceForPurchaseOfNote" name="MinimumPriceForPurchaseOfNote" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_NinePointSevenFivePercentSeniorNotesDueTwoThousandFifteenMember" name="NinePointSevenFivePercentSeniorNotesDueTwoThousandFifteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_NonInterestBearingNotesReceivedInExchangeOfPreferredStock" name="NonInterestBearingNotesReceivedInExchangeOfPreferredStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="siri_NumberOfAdditionalYearsToExtendAgreementsUnderUnilateralOption" name="NumberOfAdditionalYearsToExtendAgreementsUnderUnilateralOption" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_NumberOfCommonSharesExchangedUnderShareLendingAgreements" name="NumberOfCommonSharesExchangedUnderShareLendingAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_NumberOfCommonSharesToBeIssuedForEachShare" name="NumberOfCommonSharesToBeIssuedForEachShare" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_NumberOfOwnedSatellites" name="NumberOfOwnedSatellites" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_NumberOfSatelliteRadioSystems" name="NumberOfSatelliteRadioSystems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_NumberOfShareCommonSharesReturnedOnCommonStockBorrowed" name="NumberOfShareCommonSharesReturnedOnCommonStockBorrowed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_NumberOfSharesOfCommonStockIntoWhichPreferredStockIsConvertible" name="NumberOfSharesOfCommonStockIntoWhichPreferredStockIsConvertible" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="siri_ObligationOfRelatedPartyTowardsCompanyForRightsToBroadcastAndMarket" name="ObligationOfRelatedPartyTowardsCompanyForRightsToBroadcastAndMarket" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_OperatingLeaseObligationsMember" name="OperatingLeaseObligationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_OperatingLeaseTermMaximum" name="OperatingLeaseTermMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_OperatingLeaseTermMinimum" name="OperatingLeaseTermMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_OrbitingSatellitesEstimatedEndOfDepreciableLife" name="OrbitingSatellitesEstimatedEndOfDepreciableLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_OrbitingSatellitesYearDelivered" name="OrbitingSatellitesYearDelivered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_OtherNonCashPurchasePriceAdjustments" name="OtherNonCashPurchasePriceAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="siri_OtherRelatedPartyCurrentLiability" name="OtherRelatedPartyCurrentLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_OthersMember" name="OthersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_PaymentReceivedFromRelatedPartyInExcessOfCarryingValue" name="PaymentReceivedFromRelatedPartyInExcessOfCarryingValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="siri_PercentOfOmmonStockOutstandingAfterConversion" name="PercentOfOmmonStockOutstandingAfterConversion" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_PeriodBeyondExpectedOperatingPerformanceOfDesignLife" name="PeriodBeyondExpectedOperatingPerformanceOfDesignLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_ProfitSharingMember" name="ProfitSharingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ProgrammingAndContent" name="ProgrammingAndContent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_ProgrammingAndContentMember" name="ProgrammingAndContentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_PropertyAndEquipmentTextualAbstract" name="PropertyAndEquipmentTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ReceivablesFromDistributors" name="ReceivablesFromDistributors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_ReceivablesFromDistributorsAbstract" name="ReceivablesFromDistributorsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ReceivablesFromDistributorsTableTextBlock" name="ReceivablesFromDistributorsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_RecentAccountingPronouncementsPolicyTextBlock" name="RecentAccountingPronouncementsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_RelatedPartyTransactionAbstract" name="RelatedPartyTransactionAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_RelatedPartyTransactionsTextualAbstract" name="RelatedPartyTransactionsTextualAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ReserveForUncertainTaxes" name="ReserveForUncertainTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="siri_RestrictedCashAndInvestmentsDisclosureTextBlock" name="RestrictedCashAndInvestmentsDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_RestrictedStockAndRestrictedStockUnitsRsuMember" name="RestrictedStockAndRestrictedStockUnitsRsuMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_RestrictedStockUnitsRsuAndStockOptionsMember" name="RestrictedStockUnitsRsuAndStockOptionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_RevenueFromRelatedPartyOneAbstract" name="RevenueFromRelatedPartyOneAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_RevenueFromRelatedPartyOtherAbstract" name="RevenueFromRelatedPartyOtherAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_RevenueFromRelatedPartyTableTextBlock" name="RevenueFromRelatedPartyTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_RevenueFromRelatedPartyTwoAbstract" name="RevenueFromRelatedPartyTwoAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_RevenueShareAndRoyalties" name="RevenueShareAndRoyalties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="siri_RoyaltyForAllSubscriberFeesEarnedByRelatedParty" name="RoyaltyForAllSubscriberFeesEarnedByRelatedParty" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_RoyaltyPercentageInGrossRevenueMaximum" name="RoyaltyPercentageInGrossRevenueMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_RoyaltyPercentageInGrossRevenueMinimum" name="RoyaltyPercentageInGrossRevenueMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SatelliteAndTransmission" name="SatelliteAndTransmission" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SatelliteAndTransmissionMember" name="SatelliteAndTransmissionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SatelliteExpectedOperatingPerformanceOverDesignLife" name="SatelliteExpectedOperatingPerformanceOverDesignLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SatelliteIncentivePaymentsMember" name="SatelliteIncentivePaymentsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SatelliteSystem" name="SatelliteSystem" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_SatelliteSystemMember" name="SatelliteSystemMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SatelliteTelemetryTrackingAndControlFacilities" name="SatelliteTelemetryTrackingAndControlFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_ScheduleOfFiniteAndIndefiniteLivedIntangibleAssetsByMajorClassTable" name="ScheduleOfFiniteAndIndefiniteLivedIntangibleAssetsByMajorClassTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SecuredNotesMember" name="SecuredNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ServiceAgreementContractTermWithSportsProgrammingProvider" name="ServiceAgreementContractTermWithSportsProgrammingProvider" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember" name="SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SevenPointSixTwoFivePercentSeniorNotesDueTwoThousandEighteenMember" name="SevenPointSixTwoFivePercentSeniorNotesDueTwoThousandEighteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpireTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpireTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionForfeitedInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionForfeitedInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValues" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfShareBasedBenefitPlans" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfShareBasedBenefitPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisableIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisableIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisableWeightedAverageRemainingContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisableWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisesInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisesInPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionGrantsInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionGrantsInPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_ShareBasedPaymentExpenseToEmployeesAndNonEmployees" name="ShareBasedPaymentExpenseToEmployeesAndNonEmployees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusCanadaMember" name="SiriusCanadaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusFmFiveSatelliteMember" name="SiriusFmFiveSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusFmFourSatelliteMember" name="SiriusFmFourSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusFmOneSatelliteMember" name="SiriusFmOneSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusFmSixSatelliteMember" name="SiriusFmSixSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusFmThreeSatelliteMember" name="SiriusFmThreeSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusFmTwoSatelliteMember" name="SiriusFmTwoSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusSystemMember" name="SiriusSystemMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusXmCanadaMember" name="SiriusXmCanadaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SiriusXmPlanMember" name="SiriusXmPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SpaceSystemsLoralMember" name="SpaceSystemsLoralMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SubscriberAcquisitionCosts" name="SubscriberAcquisitionCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SubscriberRevenueAbstract" name="SubscriberRevenueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SubscriberRevenueDisclosureTextBlock" name="SubscriberRevenueDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SubscriberRevenueTableTextBlock" name="SubscriberRevenueTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SubscriberRevenuesAbstract" name="SubscriberRevenuesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SubscriptionFees" name="SubscriptionFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="siri_SummaryOfIntangibleAssetsTableTextBlock" name="SummaryOfIntangibleAssetsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SummaryOfOrbitingSatellitesAbstract" name="SummaryOfOrbitingSatellitesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SummaryOfOrbitingSatellitesTableTextBlock" name="SummaryOfOrbitingSatellitesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_SummaryOfRelatedPartyLongTermDebtAbstract" name="SummaryOfRelatedPartyLongTermDebtAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SummaryOfRelatedPartyLongTermDebtTableTextBlock" name="SummaryOfRelatedPartyLongTermDebtTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_SummaryOfRelatedPartyTransactionTableTextBlock" name="SummaryOfRelatedPartyTransactionTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_TermOfObligationOfRelatedPartyTowardsCompanyForRightsToBroadcastAndMarket" name="TermOfObligationOfRelatedPartyTowardsCompanyForRightsToBroadcastAndMarket" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant" />
  <xsd:element id="siri_TerrestrialRepeaterNetwork" name="TerrestrialRepeaterNetwork" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_TerrestrialRepeaterNetworkMember" name="TerrestrialRepeaterNetworkMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_ThirdPartiesMember" name="ThirdPartiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_ThirteenPercentSeniorNotesDueTwoThousandThirteenMember" name="ThirteenPercentSeniorNotesDueTwoThousandThirteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_ThreePointTwoFivePercentConvertibleNotesDueTwoThousandElevenMember" name="ThreePointTwoFivePercentConvertibleNotesDueTwoThousandElevenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_TwoPointFivePercentConvertibleNotesDueTwoThousandNineMember" name="TwoPointFivePercentConvertibleNotesDueTwoThousandNineMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_UnamortizedDebtIssuanceCostsRecordedInDeferredFinancingFeesNet" name="UnamortizedDebtIssuanceCostsRecordedInDeferredFinancingFeesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="siri_UnamortizedDebtIssuanceCostsRecordedInLongTermRelatedPartyAssets" name="UnamortizedDebtIssuanceCostsRecordedInLongTermRelatedPartyAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="siri_ValuationAllowanceOnCreditFacility" name="ValuationAllowanceOnCreditFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="siri_ValueOfCommonStockDeliveredUnderAgreementWithProgrammingProvider" name="ValueOfCommonStockDeliveredUnderAgreementWithProgrammingProvider" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="siri_VestingPercentageOfEmployerContributionsForEachYearOfEmployment" name="VestingPercentageOfEmployerContributionsForEachYearOfEmployment" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="siri_WarrantsExercisedToPurchaseCommonStock" name="WarrantsExercisedToPurchaseCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_WarrantsIssuanceRelatedExpense" name="WarrantsIssuanceRelatedExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="siri_WarrantsToAcquireCommonStock" name="WarrantsToAcquireCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="siri_WeightedAverageExpectedPeriodForRecognitionOfCompensationExpenses" name="WeightedAverageExpectedPeriodForRecognitionOfCompensationExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="siri_XmCanadaMember" name="XmCanadaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_XmFiveSatelliteMember" name="XmFiveSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_XmFourSatelliteMember" name="XmFourSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_XmOneSatelliteMember" name="XmOneSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_XmSystemMember" name="XmSystemMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_XmThreeSatelliteMember" name="XmThreeSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_XmTwoSatelliteMember" name="XmTwoSatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="siri_YearsInWhichLicensesExpiresAbstract" name="YearsInWhichLicensesExpiresAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="siri_YearsInWhichLicensesExpiresTableTextBlock" name="YearsInWhichLicensesExpiresTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
</xsd:schema>
