Phantom songs on Cyanogenmod 10.1 phone
It is a problem on your ROM. I also had that issue, until the ROM dev fixed the sdcard mount points. It is because your sdcard has two symlinks (usually @ /mnt/sdcard and /storage or whatever) so your phone thinks that you have 2 sdcards. You can solve this by excluding one of the mounts like I do on MXPlayer before it was fixed. You should inform your ROM dev about this issue so he can fix it.