Ok here is my setup. I have a G5 as my main iTunes server, a Macbook Pro, and a PC hooked up to my television as a home media center (until iTV comes out). I have iTunes sharing setup on the G5. Both my MBP and TVPC see the library fine. I can access the music and videos fine from the MBP. Front Row works pretty much flawlessly. However, on the TVPC via iTunes only music streams as it should. It refuses to play almost all video files. Every once in awhile it will play one, but it usually won't. I've done extensive testing and file size and file type seem not to matter. iTunes/Quicktime is up to date on all machines and all machines have 802.11g wireless. anyone else having problems with Mac to PC video sharing?