I just found this RSS + Bit Torrent reader called Buttress. It's java based and also licensed under the GPL. They've got a version for Windows, too. I have a feeling that bit torrent downloads will become a standard feature of all RSS aggregators soon, but my focus will remain creating a UI specifically meant for your television.

Bonnaroo is a yearly jam-friendly, taper-friendly music festival held in Tennessee. It was held last weekeend and below is an aggregate of all of the torrents which have been made available from the performances there. For now I don't have the torrents listed as enclosures with this entry, so you'll actaully have to click and download these manually. But I think this gives a good idea to where this is all headed.

Umphrey's McGee
Trey Anastasio Band FOB AKG's
David Byrne
Gov't Mule AKGC33->V3
Dave & Friends AKGC33->V3
moe.
Mike Doughty - Interview for XM Radio
Dave & Friends mk41
Leftover Salmon
The Dead AKGc451b
Acoustic Syndicate SBD
Dave & Friends ck63
Chris Robinson and New Earth Mud
Damien Rice ck63
Barbara Cue
Superjam
Burning Spear
Femikuti
Danger Mouse