Hey, Just before I switched from PC to Mac I converted my AVI's to MPG4 thinking it was a great idea. Now I'm trying to edit them in Final Cut Express and it's not letting me. I have MPEGstreamclip but the demuxing option in the file menu is always grayed out. So I tried converting them to DV in the hopes that this would work, but all it does is cut the files into 5 pieces with mix-matched audio, which doesn't help at all. And now I'm beginning to regret buying Final Cut Express. So if you could please restore my faith and sanity by telling me what to do, that would be very much appreciated.