Hi Guardman:

If you only plan to promote your songs/music and don't intend to allow downloads, the best site going is MusicPlaces.com where you can display your wares for free or, if you want star treatment, you can pay a little extra. (We chose the free route and have been quite happy.) Our website (which allows downloads) is also linked to MusicPlaces so our clients can either listen or download.
The key contact there is Wayne Fetherbay. Good Luck, regardless. Check out DemoSongSite.com to see our website.