Play 'em helps you create playlists from your favorite Youtube videos and listen them on your iPhone when you are on the road, you exercise at the gym or when you just feel to listen something you love.
Play 'em streams only the audio so you don't have to worry about charging your phone bill for high data traffic. Play 'em plays fair, is not hiding videos, it just serves you the sound of your favorite videos.
You can even use Play 'em when your device is locked or just stream the music to any AirPlay device you may have.
So why not you try Play 'em now?