Remove now playing info when finished
Fix giant bug that have been terrifying us for years
Fix race condition where now playing was sent before scrobbling and got lost
Try to fix crash at __42-[MusicFileManager startBufferingRequest:]_block_invoke150 (MusicFileManager.m:247) (*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSCFString stringByAppendingString:]: nil argument’)
Fix undoing to empty playlist