EMP Anyone?

I was talking with some friends about converting media files - I have come to rely on download in the past years.  I thought I knew all about the existing files but I was wrong.  I recently discovered the File Extension EMP, which is apparently associated with more than one product.

One such product is online music which you can download from eMusic.com.  Most files with 

the File Extension EMP are actually music files.  I do not know much about the quality of these files as of yet but from what I hear, they are quite good.  The only caveat is that you cannot use .emp files directly with iTunes and other similar software - you need a converter to do that.  

It sounds pretty interesting, though, especially if you find some good music at eMusic.