Create a promotional CD or sampler with your best beats. Use only a 30 second sample of the beats you put on your CD. This will give potential buyers an idea of what type of music you produce.
Contact local music labels by looking in the phone-book. Tell the manager of a music artist that you are a music producer selling fresh sounding beats. Send your sampler CD's to several record labels.
Create a music account on Myspace.com. Make your page appealing to visitors. Upload your beats onto your page. Set a price for your beats. Set reasonable prices. Keep in mind that you are competing with millions of other music producers. Wait for your music player to update your beats. Add music artist, managers and other producers as friends. This is a powerful way to market your beats.
Create a music profile on Soundclick.com. Attract buyers by giving away a few free beats. The more traffic you have on your page the more likely you will sell beats. Check out other music producers beat fees so you can figure out how to make your prices competitive.