Streaming fsmp3player v1.3 with xml?

I hope I am posting this in the right section. I am a total newbie when it comes to actionscript and xml but I just bought a book recently to gain some knowledge.
My question is I want to know if there is a way to block the downloading of mp3 files with streaming music.
Here is a site similar to mine but my Internet Download Manager is able to download the mp3 files.
I know I can block it by removing the mp3 extension from my download manager but I want to block people from downloading mp3 files so I don’t run into copyright infringements but still have the files stream.
Thank You,
Father Raphael