I'm not sure how many ppl this applies to, but I managed to get all the audio streams working through my two Tivos at home, meaning I can pull up the audio through the tv, and listen on the couch, or in the bedroom, in addition to my desktop or either of the two laptops
Suffice to say, the wife hates it....but here's how I did it.
I feed the tivos through JRiver Media Center (instead of the Tivo Publisher software). I open JRiver Media Center, select OPEN URL from the File menu, enter the URL (ending with m3u extension). JRiver starts playing the stream...
Go to JRiver's NOW PLAYING section, right click on the item, select ADD TO PLAYLIST. Repeat for all the ATC feeds
Restart JRiver Media Server..._RUN_ upstairs/downstairs to your Tivo, and viola/violin/cello...there they are!