the only mp3 flash player I've see has been the Google Audio widget which is limited in its appearance.
http://www.widgetbox.com/widget/mp3
For my wordpress, I like the player I use 1 Pixel Out's, which is great:
http://www.1pixelout.net/code/audio-player-wordpress-plugin/
Anyway I could use this without much coding on a regular, non-wordpress, php page?
I ended up using the standalone version of pixelone.