Just in case I was not clear enough: MP3 and WAV are file formats, whereas a traditional Audio CD has no file system at all, it has tracks instead. The important thing is to tell the burning software to produce such an Audio CD (rather than a CD-ROM for files). If that software can read MP3 files at all, which most modern software can, it will do exactly what you want. If it cannot, you can do the transformation to WAV; be sure to specify the parameters as mentioned in my last post, otherwise you may lose more quality.