I think you must have experience the strong 3D function of PaperVision 3D if you have read the article: Turtorial About How to Produce The Globe Guide By Papervision In Flex. Of course not just the globe. By use of the 3D function of PaperVision 3D can create AS3 Mp3 Player based on sound files wave show and the show effect is also good. Then following is the detail tutorial for your reference.
A small Mp3 Player is embedded into other systems easily and very populared in developers. For example a small Open-source flash MP3 player. And I found another one in lemlin.com: AS 3.0 XML MP3 Player. It looks so nice and has published the source code and free use for personal. The password for zip is: lemlinh.com.