I have a macbook pro Mac OS X Version 10.6.4, and I'm trying to convert my movie library to MP4 so I can use on my new Apple TV. I ripped it straight from the disk to Handbrake. The first one I tried went pretty well, then after I was finished there was no sound? I checked it in several different media players, but none worked. The picture was great, and I'm sure I just have a setting wrong but I don't know which one. I had it set up on 1 pass, same as source MP4 format. Anyone else run into this?