Just wanted to point out the homebrew Coders of the Windows Mobile community are making quality apps for free and no need to jailbreak. Imitation is the sincerest form of flattery.
Spoiler for cover flow:
In con-junction with iFonz
video of it here
the video is poor I know but it is a free app that I installed on my Hermes that plays .mp3 and wma audio with it only getting better. My phone does interfere with audio but you get the point.
You can get it here