iPad MP3 Converter - HandBrake
HandBrake is an open-source, GPL-licensed, multiplatform, multithreaded video transcoder, available for Mac OS X, Linux and Windows. It can rip DVD to mp4 video for iPad.
File format: MP4 (iPad compatible video) and MKV
Video: MPEG-4, H.264, or Theora
Audio: AAC, CoreAudio AAC (OS X Only), MP3, or Vorbis. AC-3 pass-through, DTS pass-thorugh (MKV only)
So you can use HandBrake as a free iPad MP3 Converter.
iPad Music Transfer - iPad to Computer Transfer
Cucusoft iPhone/iTouch/iPod/iPad to Computer Transfer is small iPad Music Transfer created to help you transfer and backup all your files from your iPad/iPod/iPhone/iTouch. With it, you can recover lost or missing music or backup and restore all of your iPod/iPhone/iTouch content; including your favorite music, videos, photos, playlists and more.
If you have any iPod/iPhone device, this iPad to Computer Transfer is a 'must have' utility to keep your iPad/iPod/iPhone safe.
iPad MP3 Download - 3hive.com
A great blog-style listing of free iPad music download site offered by record artists and labels in an attempt to entice full-album purchases. Music are in the MP3 format in a variety of bit-rates generally ranging between 128kbps and 192kbps.