After a week or so of on and off futzing trying to get my music library streaming to my HR20's, I finally have success. First try was TwonkyVision. It was very promising at first, especially given the built-in support for iTunes, which I use. After installed the LPCM plug-in, my music was immediately available on my receiver. Too bad that EVERY file I tried to play sounded like it was playing in slow motion, as had been reported by others here. That was the end of that experience. Next was WMP 11. Again, it was a breeze to set-up. Getting my music to display on the HR20 was a different story. In short, what I found was that if you have a small number of songs in your library, it works great. Once I added my entire library (all mp3's; 22,000+ songs totaling over 110GB) it was a diffent story as I could not access a single track. It seemed as if the unit were timing out trying to retrieve the lists of albums/artists/songs or something. So I called it quits on that one too. This afternoon I decided to try TVersity (http://www.tversity.com/). It was almost too easy. Here is what I did: Download and install the software Reboot the PC and verify that the TVersity service starts after reboot Verify that your firewall allows the executable to accept incoming connections Go to the Settings tab; under General change the 'Playback Device' to Xbox 360 and under Transcoder change 'When to transcode' to always (read these somewhere else here - not trying to take credit for them) Restart the TVersity service Restart the HR20 And just like that (about 30 minutes of effort), I have my entire library accessible on both HR20's - one hard-wired to the router and one using the Linksys Wireless Gaming Adapter. So, if you were like me and REALLY wanted to get this cool feature working and were pulling your hair out, give TVersity a try. Hope this information can help some of you out!