A method of distributing content from multiple media content providers comprises combining the content into one or more composite data streams, and conveying the composite data streams to a plurality of receiver systems, each of which has a user interface that displays content provider information and allows for the selection of one of the providers for playing of the selected provider's media content. The media content is preferably provided to a computer server system via a data communications network. One or more composite data streams can be upconverted and uplinked to a satellite system for reception by satellite radio receivers. Intermediary service providers might also be used to receive the composite data streams, either via satellite or land-based communications lines, and format the data as needed for use by one or more associated end-user devices.

 
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> Radio positioning system for providing position and time for assisting GPS signal acquisition in mobile unit

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