I'[m quite unsatisfied with the media player as a music player goes. It's way too basic.
- No EQ, weird tag sorting and very confusing way of creating playlists and no folder browsing etc.
- Media player widget doesn't work half the time. (Does nothing when pressing Play)
- The fact that you have to edit the tracker config file manually to exclude or include some folders is rubbish also.

MediaBox app is definitely better although it does use more cpu and music gets interrupted even when locking the phone.
Make the media player either open source or at least make a better one. It is bad. No doubt about it.
All of my friends and family tried it out and they did not like it saying it's too weak. That's just shows how it is.