The fist to come to mind was taxi.com.
Maybe try...
AmieStreet.com - A social network and music marketplace for indie artists. They give the artists 70% of the sale.
AnyGig.com - A place for musicians to get listed for small gigs, or find venues to play at.
Artistopia.com - An online venue for performers to give themselves an online presence with a profile and display their work.
BandBuzz.com - A social network where artists can set up a profile, upload their music and get reviewed and recommended by users.
BandChemistry.com - A site for musicians to find new members for their group or form a whole new band.
Bandwagon.co.uk - A social network for lovers of indie music where the bands can sell mobile content such as ringtones and wallpapers.
ChampionSound.com - Free mailing list manager for artists, promoters, and venues.
Elisteningpost.com - A way for musicians to upload their music and sell it just about anywhere they want such as MySpace and Facebook.
FireGigs.com - A site with the aim of promoting unsigned bands by arranging to get their music to be played in the background at cafes, coffee shops and more. Also promote you through a Facebook app and MySpace widget.
Fuzz.com - Lets performers upload their music sell it, as well as manage mailing lists and more.
HumbleVoice.com - A place for all types of independent artists, including musicians, to upload their work and promote it.
iJamr.com - Indie musicians upload their music and bloggers can display your songs on their sites for free, and if a sale is made, they blogger gets a cut.
Indistr.com - A company letting independent artists sell their music directly to the public and the musicians receive 75% of the sale.
mTraks.com - An online marketplace and network for indie artists to promote and sell their music.
Mubito.com - Allows you to set up a band website easily and sell MP3s. Two levels of stores with one of them being free.
Musicane.com - Promote and sell your music and ringtones.
MusicNation.com - A community of musician profile pages that engage regularly in competition for various prizes.
Panjea.com - Bring all yourclips from the web together and put them in to one player so they take up less space on your page, so you can promote all your music easily.
PocketFuzz.com - A place for musicians to sell ringtones of their works and notify their fans of news via mobiles.
Popfolio.net - A music widget provider for blogs that lets independent musicians upload their songs for inclusion, and possible sales.
PumpAudio.com - A service for indie artists to get their music licensed for television and film.
Ripple9.com - A site to help bands promote themselves on mobile devices to their fans. New sign-ups are frozen while they are being purchased by Google.
Scriggleit.com - Software you can use on a laptop at your merchandise table so people can sign up for your mailing list.
SessionSound.com - A site for independent musicians to try to stay indie by selling their music online.
Sonicbids.com - Allows you to construct a low cost electronic press kit that can be constantly updated so the recipients always get the latest version.
Unsigned.com - A site for unsigned bands to put up a profile page and host a playlist of MP3s to attract new listeners.
