Hi, I'm new so hope this is the right place to be posting this..... I'm using Handbrake to convert AVI files to bung into iTunes to watch on my Apple TV 2. I've just started using this, was using quicktime before which was working fine... seemingly until Lion came along. I've converted my first few films this evening and on both of them the audio has worked it's way out of sync, by the time you're half an hour in the audio is infuriatingly out. This is the same wether viewing on iTunes on on the ATV. Just wondering if anyone has any suggestions for avoiding this, tweaks that I could make to prefferences in Handbrake, or is it purely because my iMac's getting a bit old and slow and I shouldn't be attempting to multitask anything on it anymore? Any insight? Thanks in advance!