All (I am a relatively new Apple community member) - I have owned an ATV2 for a year now...and have ripped somewhere around 40 movies using the RipIt application (then placed into iTunes using Subler). Since moving my movies to an Iomega 750 GB external hard-drive and back, I have lost sound on everything but my purchased movies. *I moved them back because the transfer was not complete and I feared that I could have lost everything. The movies will play on my iMac in iTunes...so I know that the audio is still part of the file. I also moved my music to and from that same external hard-drive and have no problems listening to them on the ATV2 (of course...they are all purchased files).