Extremely useful  but... The app is just amazing generally  it just has a couple of quirks that happen sometimes that don't exactly ruin its functionality  but they are slightly annoying. For example  when the screen goes to sleep and I turn it on again  or if I exit the app and open it again  it will have reset to the first playlist instead of the one I'm on. It generally does that  like when browsing the library  entering a folder and then going back it starts at the top again. Otherwise perfect.
January 11 2015