How to convert .mp2 audio files?

I've been given a large quantity of .mp2 audio files. They play fine in QuickTime Pro, but I need to add them to iTunes.
The inspector/properties in QT Pro says they are MPEG-1 audio files.
Can anyone recommend any utilities (freeware, preferably) that can convert them to anything else? I'm aware they are already lossy, so if I could get them to AIFF/WAV I would be happy. (Then I might experiment with AAC compression if it doesn't deteriorate the sound too much.)
I tried using Export in QT Pro, but it only gives me movie options (Movie to QT Movie, Movie to 3G, Movie to iPhone, etc...) and not any audio options (export to WAV, AIFF, etc.)

Thanks!!
Just tried it and it converted to AIFF very well! A bit of a level boost, but otherwise intact.

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