just like 2Bdecided said, you could try and just rename the mp2 extension to mp3 ...
I did so quite a while back with recorded satellite radio streams (mp2) and those played back just fine on my Philips eXpanium 511 CD/MP3 player back then
I did so quite a while back with recorded satellite radio streams (mp2) and those played back just fine on my Philips eXpanium 511 CD/MP3 player back then