What file type is the music?

Free hosting accounts are limited to the following file types:
.htm, .html, .shtml, .gif, .jpg, .png, .txt, .swf, .mid, .rmi, .au, .wav, .js, .css, .ico, .bmp, .class, .dcr

Courtnie

mid

It is mid.

Is it something I need to do, or is it something Bravenet needs to do within its system?

Please advise.