Learning how this stuff works. Took some short clips with trial fraps, dragged into Vegas, no video preview, just audio. When I drag down to the timeline, it goes into the "voice" row. Tried it with a bunch of clips - the ones from fraps were .avi, and some others were .MOV. only clip I tried that I could get a preview of was, in fact, an .avi, but one that I had not recorded in fraps. I am thoroughly confused. What do I need to do?