Just a thought, for those who don't want to use iTunes (I don't like the amount of processes that it runs when installed) there are some other alternatives: -

Audacity Audio Editor with Lame mp3 encoder,

Switch - available free (as trial, but when the period expires you can only export to mp3 - so makes no odds for this use) from download.com great tool. Easier when you are converting many files at once.

If this is handy, I'm happy to provide more information.

Cheers,

Henry