I have a problem with burning mp3 with Adaptec's Easy CD Creator 4. When I try to find mp3 files with browser they do not show up. When I try to drag them to burning program error shows saying that Adaptec's Easy CD Creator 4 can not recognize file extension. I am running Windows XP Professional with Service Pack 2 installed.
I think that your problem is caused by burning software. Adaptec's Easy CD Creator 4 is too old even for older operating systems then Windows XP Professional with Service Pack 2. You should upgrade to some newer CD Creator version if you have decided to stick with Roxio (no more Adaptec). Alternatively, you should give Nero a try. I, personally, think that Nero is much better burning program.