MediaHuman YouTube To MP3 Converter Extracts MP3 audio from YouTube, Vimeo, Dailymotion and SoundCloud.

Peggo.tv is a Digital Video Recorder (DVR) that records MP3s of your favorite YouTube videos and SoundCloud tracks.

TubeOffline is a free media converter & downloader to help you convert almost any online video/audio to MP4/FLV/AVI/MP3 format.

FrostWire is a free, open source BitTorrent client.

GetMp3! is an app for downloading music and videos that lets you search for any song and download the ones you like best with a single click.