Actually, the Protected AAC files cannot be converted to MP3 within iTunes. The easiest way to get MP3's out of them is to burn a CD, and then re-rip it in the MP3 format. Simple and efficient (though a little more time consuming that just converting).
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Something ironic about a bunch of computer hackers getting upset at people trying to get past their "firewall."
Actually, the Protected AAC files cannot be converted to MP3 within iTunes. The easiest way to get MP3's out of them is to burn a CD, and then re-rip it in the MP3 format. Simple and efficient (though a little more time consuming that just converting).