Have a problem with the music app on my iPhone 4S. It's my first purchase from iTunes and the first time I'm using the app. I bought one album: the Book of Mormon and the app won't play one of the songs. No matter what view I use, album, song, composer; no matter how I try to play this one song, click on it or play the song before it first: the app just skips that song. Anyone know what could be wrong?