I downloaded a movie from zml and I have video, but no audio....however when I play it on my pc the audio plays fine. Just so you know, I erased the movie and downloaded it a 2nd time and still no audio and I am using windows media player (I downloaded 2 other movies using windows and the playback works fine).
Also, when you download movies to quick time, what version are you using (I have version 7 however it asks me to download pro, at $29.99 I might add, in order to playback movies for my bb).
It could be that the avi file in question needs to be recoded so it fit's within the paramater's. I know I tried loading in a video file that was larger than 320x240 and I was able to hear it but couldn't see it.