Hey,
Just made a Flash MP3 music player for AS3. Called Dingle.
[LIST]
[]UI completely coded; in AS3. No MCs used in lib / stage. File size: ~120kb
[]Supports complex sound spectrum visualizations using DingX.
[/LIST]
Preview: http://joeltong.org/dingle/
Hopefully no lag? Seems to lag in Firefox for me. Enjoy 