i have a music that i have dowwnloaded in my computer
and im not sure how i can put it into an html stly code.
its in an mp3 form... so i did change it into wav. form... but im not sure where to go after that.

Well, usually browsers (no matter which browser you're using: firefox or IE) will play both mp3 and wav formats. But before they can play the songs, they need some place to stream it from. Therefore, you have to upload your mp3 or wav onto a host -- and the step after that would be trying to match your uploaded song url with the correct song coding (which should be found in coding subforums addressing myspace, xanga, website, etc. -- depending on where you want to put the song).

Use WMA. It doesn't go in your style code anyway. It goes in a more music code.
Tutorial: http://www.createblog.com/tutorials/download.php?id=131