Frustrating

I had this app for awhile and the kids loved it. It was great for keeping my 7yr old from taking 30min showers, and my 5yr old from taking an hour to get dressed. And I love that I can use my own songs. HOWEVER, it has recently stopped working. Whenever I try to put on one of my iTunes songs, like I always do, the whole app closes. Ive tried loading and deleting, restarting the app, iPhone, and iPad, and nothing works. Its so frustrating! Please fix this ASAP!

MamaTine about Lickety Split