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        <link:definition>06021 - Disclosure - Summary of Significant Accounting Policies (Details Textual)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://sirius.com/role/InterestCostsTables" id="InterestCostsTables">
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>0609 - Disclosure - Interest Costs (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://sirius.com/role/SubscriberRevenueDetails" id="SubscriberRevenueDetails">
        <link:definition>0608 - Disclosure - Subscriber Revenue (Details)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://sirius.com/role/StatementsOfCashFlows" id="StatementsOfCashFlows">
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>0210 - Disclosure - Property and Equipment</link:definition>
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        <link:definition>0209 - Disclosure - Interest Costs</link:definition>
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        <link:definition>0208 - Disclosure - Subscriber Revenue</link:definition>
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        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>0206 - Disclosure - Goodwill</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://sirius.com/role/SummaryOfSignificantAccountingPolicies" id="SummaryOfSignificantAccountingPolicies">
        <link:definition>0202 - Disclosure - Summary of Significant Accounting Policies</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://sirius.com/role/Business" id="Business">
        <link:definition>0201 - Disclosure - Business</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:roleType roleURI="http://sirius.com/role/BalanceSheetsParenthetical" id="BalanceSheetsParenthetical">
        <link:definition>0121 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://sirius.com/role/BalanceSheets" id="BalanceSheets">
        <link:definition>0120 - Statement - Consolidated Balance Sheets</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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  <element id="siri_NumberOfShareCommonSharesReturnedOnCommonStockBorrowed" name="NumberOfShareCommonSharesReturnedOnCommonStockBorrowed" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="siri_AgreementToRepurchaseOfCertainProductsShippedToDistributorFromDateOfShipment" name="AgreementToRepurchaseOfCertainProductsShippedToDistributorFromDateOfShipment" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="siri_InvestmentsTextualAbstract" name="InvestmentsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="siri_FmFiveXmFiveXmFourAndXmThreeMember" name="FmFiveXmFiveXmFourAndXmThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="siri_ShareBasedPaymentExpenseRelatedToSevenYearAgreementWithSportsProgrammingProvider" name="ShareBasedPaymentExpenseRelatedToSevenYearAgreementWithSportsProgrammingProvider" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="siri_ShareBasedPaymentsInSatisfactionOfAccruedCompensation" name="ShareBasedPaymentsInSatisfactionOfAccruedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="siri_DeferredTaxAssetsLoanFinancingCosts" name="DeferredTaxAssetsLoanFinancingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="siri_DeferredTaxAssetsExpensedCostsCapitalizedForTax" name="DeferredTaxAssetsExpensedCostsCapitalizedForTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
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  <element id="siri_IssuanceOfPreferredStockNetOfCosts" name="IssuanceOfPreferredStockNetOfCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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  <element id="siri_TwoPointFivePercentConvertibleNotesDueTwoThousandNineMember" name="TwoPointFivePercentConvertibleNotesDueTwoThousandNineMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="siri_ExchangeOfConvertibleNotesDueTwoThousandNine" name="ExchangeOfConvertibleNotesDueTwoThousandNine" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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  <element id="siri_AdjustmentsToAdditionalPaidInCapitalConvertiblePreferredStockWithConversionFeature" name="AdjustmentsToAdditionalPaidInCapitalConvertiblePreferredStockWithConversionFeature" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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  <element id="siri_SatelliteTelemetryTrackingAndControlFacilitiesMember" name="SatelliteTelemetryTrackingAndControlFacilitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="siri_LeaseholdImprovements" name="LeaseholdImprovements" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="siri_ReceivablesFromDistributorsTableTextBlock" name="ReceivablesFromDistributorsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <element id="siri_SevenPointSixTwoFivePercentSeniorNotesDueTwoThousandEighteenMember" name="SevenPointSixTwoFivePercentSeniorNotesDueTwoThousandEighteenMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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</schema>
