audio sync problem (*.rmvb) files ... on jet audio or jet video player

[friendslove]

i have sound delay while playing rmvb files on jet audio or jet video player
it sync back when i reset play position ..
for example .. i am playing video and got sound delayed at 5:30
then i positioned the video to 5:30 the sound synced and get delay again after a while like on 10 min .. and when reset position at 10min the video again the audio synced again .. and so on ...
i hope that explained my problem
and hope that anyone have ideas to try or solutions

[Shark007]

test the file in WMP (Windows Media Player) - is the issue present there also?
I am unable to reproduce the issue - I tested in MPC-HC and WMP