MIME Files

[GameMaster]

I have music on my computer that I want to put onto a CD. My computer doesn't have a CD-RW drive. I have e-mailed it to myself so that I can download the files onto my parents computer which is equipped with a CD-RW drive. When I sent the files as attachments, they were transformed from mp3 files into MIME files. My parents computer is a PC. My question:

Once downloaded, how do I re-convert these files to mp3? Is there a special apllication I need?

Your help is appreciated