You can use CSS style sheets to "pimp your profile" that's all other sites use. Or if you don't create your own CSS style sheet google "Thomas myspace editor" that's ok for a quick fix.
Or you can completely redesign your profile using DIV layers.. Everything is dependant upon how experienced you are in design.
Do you want to add a background, change the tables and fonts.. etc? Because that is just CSS and Thomas myspace editor will do it for you
As for music.. You can go to playlist.com which seems to be the most popular or dizzler.com (i think that's the url) I use myflashfetish.com myself, it has nicer players.
Hope that helps ya to start off