For the DRM-protected files, software. TuneClone. It creates a fake CD burner on your system, you tell iTunes to burn a disc, the software then converts it to MP3. Essentially the same as burning and re-ripping, but we had a good amount of iTunes-purchased music piled up and this was a much faster solution.
For non-DRM protected AAC files (anything recently purchased, or the large collection of music that we had ripped from CD before realizing that you can set iTunes to rip to MP3 instead of AAC), iTunes has a "create MP3 version" option built in.
__________________
'He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me.'
-TJ
|