Hi! I'm somewhat of a newbie. I am trying to convert a number of .avi files to .mp4 to play on my AppleTV. I have been using custom settings for the H.264 player, but have only altered the video settings (increased the data rate to 3000 kbits/sec), but not the audio settings (which are AAC-LC format, 128 Kbps data rate, Stereo Channel, 48 kHz output sample rate, and Better encoding quality). In the resultant .mp4 file, the video comes out great, but oftentimes there is no audio. I have checked the .avi files playing them using VLC and the audio is fine there. Has anyone else experienced this and is there a workaround? Thanks.