Do you know how, or of a site I can use?
Winamp / Shoutcast setup is recommend.. free to download and setup, depending on your ISP and bandwidth, as well as quality of the music you want to play, you could host 1 to 6, maybe 7 listeners... if you wanted to spend a little bit of $ a month, you could host up to 500 should you so choose. At that point, you could just queue up music and let it go, or grab the mic and toss in DJ stuff, talk, do interviews, all of that as well. (Used to do this for an IRC network in years past)