well i guess they could be WAV but WAV tends to be bigger file sizes, meaning less songs to put on your MP3 CD,

OK lets make this easy. Open Nero, Click Burn Data Disc, Select 100+ songs or however many will fit on it. Click Next, Click Burn. After its done recording take the disc out and put it in your MP3/CD player and JAM. :nod:

uh they're not .wav, yes .wav extensions produce bigger filesizes.

burn a traditional song in .wav format and stick it in a normal old cd player and see if it plays. it won't, it uses a proprietary extension *.aiff

*.wav, *.wmp, and *.mp3 song files work in some multiformat cd players.