I'm in a band and we have some great songs.
If you want a chance for people other than your friends and family to hear them, you should put them online. The fastest, cheapest way is to upload some of your music to one of the dozens of music hosting websites available. MySpace is the biggest, most popular place for bands to reach out to potential fans. It's free and your can upload four songs. It's like a mini-personal web site for your band.
Other free hosting sites that have been around a while include Soundclick, Download.com, Unsigned Band Web, Soundlift, Independent Artist Company, Project Overseer and Song Planet
The Complete List of Music Hosting Sites
If you want to allow podcasters a chance to publicize your songs then Podshow.com is a great place to start.
I'm not a lawyer and concerned about copyright. How do I protect my songs while getting exposure?
Making a song or two available to podcasters is a very cool way to get your music heard by hundreds of music lovers. Simply pick the Creative Commons (CC) license that best suits your needs. With a Creative Commons license, you keep your copyright but allow people to copy and distribute your work provided they give you credit — and only on the conditions you specify here.
You keep control of your intellectual property while granting podcasters limited use for free. You get exposure and podcasters get content for their programs. They will drive traffic to your website or the online store of your choice.