I just updated to iOS 8.4. The first day my music app was kind of glitchy. I ended up downloading some different music players which worked fine. Then later that same day, the regular Music app/player pulled up correctly. At that point I deleted the alternate music players. A couple days later I jailbroke my iPhone 5, and then my Music player/app started acting glitchy again. It keeps crashing. I downloaded some alternative music players, and those crash or freeze up as well. Any suggestions how to fix this? I saw on one site to delete the songs, open I-FunBox on a PC and delete the media & music folders. I tried this process twice with no luck. Any ideas on how to fix this?