I recently downloaded my first divx with ac3 surround 5.1 instead of the usual mp3 audio. I have the ac3 decoder and the audio sounds great and all, but the second I pause or search through the video (i.e. fastfoward, rewind) the audio sounds like there are little foot steps in the background (Background noise). If I let the file play through it all is clear as a bell, but if I interupt it at all it starts screwing up, the video remains fine. I also tried playign the file without the ac3 filter, just the decoder so it came out as stereo and in this mode the file sounds fine, but I get no 5.1 . My system is a P3 1ghz, 256 ram, audigy sound card, geforce3 video, and plenty of hard drive to spare. I was thinking maybe my processor is having trouble with the high quality audio when the stream of the movie gets interupted. Has anyone had a similar problem or know what the hell I am doing wrong?