Hey, guess what?? I am also having the same problem you are I believe! Maybe if you find the answer you can let me know. My problem is that I download mp3 songs from the internet and my computer saves them only as m3u files. Then when I try to use the "Adaptec Easy CD Creator 4" it will only allow me to transfer songs with .wav and .mp3 file extensions. Have you figured out yet how to fix this? What type of computer do you have? I have a Sony RX450. Help!!!!!! please!!!