FREE MUSIC Version 1.50 (BigBoss) worked great, but the update to 1.50.1 ruined everything. It would no longer work. If I'm not the only one who experienced this problem, please do remove that app (make sure you remove it from inside Cydia), reboot, and then start fresh by going to this link:

SSH it into your iPhone, install it (using iFile or MobileTerminal "dpkg -i ..."), then REBOOT again. There, the Free Music app works again!!