No, I already have Flip4Mac installed.
Its 'kind' is an 'avi Movie' and it's 'format' is as follows:
DivX 6.0, 576 x 240, Unknown
'ms ', Stereo, 48.000 kHz
Also, I've noticed that other movies (with working sound) use 'MPEG Layer 3' instead of 'ms '... Does this have anything to do with my...