i donwloaded black adder and encoded it using virtual dub
125 bitrate,
15fps
320 by 240
rotated left by 90

Divx settings were
profile - portable
and variable bitrate mode - 1 pass
onced i had compressed 31 mins came down to about 33megs.
but when i play it a quarter of the way through the sound isnt in tune with the video.

pocket vmp settings
drop tolerence full
cach 12
no avi index
keep alive
show dropped frames.

at the end there are no dropped frames either?

edit::
audio settings
sampling rate
22050hz
precision
8bit
channels
mono

mpeg layer 3
compression

i have the dell axim 400