Man, this is frustrating. When I update songs, they do not update in my iPhone. Yes, I have latest version of app. There is no place to clear the cache. I have tried turning on "Clean database" and "Clean image cache" in the System Settings area. I seem to remember there was a place to do this in my old Android. I went and cleared the cache in Safari thinking that may be the problem. Turned phone off and on.
Just finding a place to ask a PRETTY BASIC question like this takes a lot of searching. There's a place where you can ask twitter and a reference to a contact form that apparently does not exist.