Is there any app through which I can download a YouTube audio directly from that app which is 320kbps? - Quora
Block YouTube Ads & Enable Background Playback on Your iPhone—No Jailbreak Needed « iOS & iPhone :: Gadget Hacks
Is there another way to download YouTube videos to your music library without protube? This was the main feature of bridge for me, and since protube is broken I can't do it.
Jailbreak Tweaks Zone: How to download Mp3 from YouTube on iPhone (Compatible with iOS 6 )
Find Out the Best YouTube to MP3 Converter from This List