Download YouTube Playlist to MP3 YouTube Playlist Downloader
ddownr - Online Downloader
How to Download YouTube Playlist to MP3/MP4 Easily
Apps4YouTube - Easy YouTube Downloader, YouTube Music Downloader, Download MP4 and MP3 - Apps4YouTube - Easy YouTube Downloader - Download|Convert YouTube Videos and Playlists to mp3|mp4
FAQ - Download and Convert YouTube Videos and Playlist to MP4 or MP3 - Apps4YouTube - Easy YouTube Downloader - Download|Convert YouTube Videos and Playlists to mp3|mp4