video studio 9 audio

[srocket]

I try to edit music on vs9 (demo), but the tracks seem to "float" and I can't isolate a specific part of a song. I'm sure I must be doing something wrong, as I love the rest of the demo. I edit very easily on windows movie maker, so there has to be a way here that I'm not getting. The read-me on the demo is so basic. What am I doing wrong?