Download and Convert YouTube Videos with Grab Tube
Grab-Tube is a free user-friendly online tool that allows you to download and convert videos from YouTube.
This service allows you to convert FLV (YouTube), AVI (Windows Video), 3GP (cell phones video), MP4 (Mac + Windows) files to either MP3 (digital audio files), MP4, FLV, 3GP, MPG (MPEG) or AVI.