I'm ready(in principle) to start work on a Star Wars fan edit.  I have an original idea that I think could be an awesome new take on the series.  I have minor video editing experience(enough for my needs for this project) and I have sound(music) editing experience, but here's my issue - I need to remove/change music from parts of the film while maintaining sound effects and dialog, and I don't know how that's done.  I know it can be done, I've seen it done in other fan edits.  What's the trick?

If someone can help me with this, and I ever get off my butt and get the project done, you can bet it'll be proudly displayed on this site.

BTW since I don't post much here, I'll take this time to thank all those who have made awesome fan edits.  There are so many great ones, and some that I've watched several times.