How this will work: Each major Character will have two themes, a Character Theme and a Battle Theme for their Ship (NOTE: you can also incldue a third theme if your ship has some kind of Overdrive). Both Themes will be chosen by the Forum Member RPing that Character, and can be any form of music, as long as it has a YouTube Clip. There will also be Generic Themes for various situations, such as the Main Title (since this is Arachnidus' RP, I'll let him choose the Main Title Theme).
Once you have selected a particular Character or Battle Theme, post a link to the YouTube Clip with that Theme here, so I can find it and add it to the Master Soundtrack. Also, you can come up with a Soundtrack Title for the Theme you've chosen, if you think the Track's Official Title doesn't fit that Theme's purpose as well as the music itself does.
This initial Post shall serve as the Master Soundtrack, with links to the YouTube Clips that will let you listen to the different tracks. When you post in the actual RP Thread, if a particular Theme fits a certain scene, you will post a link to this Soundtrack Thread at the beginning of that Scene, stating which Theme people should play as they read that scene.