I've been recording some songs on my Toneport UX2, i've then recorded video and synched them together with Adobe Premier 6.0, but after exporting the video i find that as the video goes on the synchronisation get's worse and worse to the point where its 2 or 3 seconds out. Conversion doesn't help it but that's not the big problem.

Example - http://www.youtube.com/watch?v=iMCbKfeY8O0

Is it the problem with exporting the timeline on Adobe Premier, my video or something else, any help would be appreciated.