There was a terrific posting of a WAV file of a cat's purring that helps in inflammation/pain management. I find that when I listen to this file that I feel great relief from arthritic pain. The problem is that I am only able to play the file while sitting at my computer. I want to make it more mobile-friendly and listen to it while away from home. Is there a way to download this onto my computer as an mp3 file? I could then transfer it to my mp3 player for portability. For those who have not tried this, it has been a great pain reliever.