There already was an XM/Sirius Tivo for radio, but the RIAA forced them to stop making it, just like they are going after file-sharers.
Peer-to-peer wireless network grids could make satellite radio obsolete before it even begins, and there is no way the RIAA will be able to stop it.
I have the Sirius S-50 and I can record anything I hear with the push of a button. Mel says a live portable will be available this summer with a BUY button.
I own 12200 shares and holding long term.