Just 2 days ago a user who has been hammering away for a couple of months on a port of Rockbox for Android released it along with the daily builds. There is currently no pre-built APK (like there is for the different media players the project already supports) so you'll haveto download the source and compile it yourself... Initial reports sound promising and already some major bugs like high CPU load, are being improved rapidly
Rockbox - Open Source Jukebox Firmware
For those who don't know Rockbox is an alternative OS that runs on a lot of different media player platforms, iPod, Sansa, Archos, etc... Extending their capablities, such as additional music file support (like FLAC), Hugely customizable GUI and constant updates and improvements.
I use it for my aging iPod Video and always hoped they would build the music player portion into an Android app someday
I havent been able to download the source code to compile an APK for it, either the server is down or my job's network is blocking it.
I don't know if i would be allowed to post a compiled APK here. I'll let you guys know once i can, or if i find one already compiled.
Unless someone here beats me to it