Actionscript on buttons/music + colour

heyo ive asked in flash mx o4 forum but not much help im affraid.

im having a go at making a skin for Kirupa, im still learning and ive created all the links ok and there working. But id like an explination and code needed to create colour of button change on rollover, eg Kirupa header at the minute.

i also have a sound clip which i want to play when the links are pressed and im not sure howto and the code?

i appriciate any help provided

-ta, kip