youtube to mp3: It's Not as Difficult as You Think
http://www.imfaceplate.com/comgan0906/use-youtube-to-mp3-software-for-latest-collection-of-songs
Do You Guys Wind Up Using Youtube To Mp3 A Lot? Ffmpeg has no problem drawing out audio from big files, but you will have to download it. First you will need to download Mlmport and SafariPlus from Cydia or Sileo.