Like SWFShape - addJpegFill(), this isn't a stable function - we'll probably need to make a separate SWFSound object to contain sound types.
swfmovie- streammp3() streams the mp3 file mp3FileName. Not very robust in dealing with oddities (can skip over an initial ID3 tag, but that's about it). Like SWFShape- addJpegFill(), this isn't a stable function- we'll probably need to make a separate SWFSound object to contain sound types.