I am having some issues when streaming some videos to my Xbox 360 through my NAS (which has Twonky installed). The videos (mostly AVI's, Xvid w/AC3 audio) play fine through my computers -- both Mac's and PC's -- but when streaming to the Xbox the audio is out of sync by about .5 - 1 seconds. Is there any way to fix this without making it so the audio would be out of sync on a computer?