There are two good Download programs that I know of these are the websites to download them from "http://www.limewire.com/; and "Morpheus.com" LimeWire will allow you to not only download music but video as well as programs. Morpheus is used more for music and from what I have heard it is really great.
As for adding music to your site you first need to find a host to upload it to and the host also needs to allow for hotlinking, you will also need an audio program to play this on but it will very from site to site so I cannot tell you which one to use. Linking the song will allow the song to play, Oh and make sure that it is MP3 I use MP2 same thing but it doesn't fall under certain site rules. When linking the song make sure the URL is presice "http://forums.xisto.com/no_longer_exists/ name/your name/URL of Song. MP2"
