2.1 music apk help

[Kirch21]

I am running bugless beast and recently pete addidnt the milestone music player. It has coverflow which is nice, but i dont have much album art and would rather the 2.1 music player.

I have the .apk but everytime i install it it says "application not installed"

I have installed the .apk succesfully many times. It wont even install with DroitRootPro.

Any ideas?