It's a do-it-yourself world out there and you need to be able to use all the marketing tools available. I'll keep adding more of these and linking you to others I feel would be helpful for you.

We're Not Songwriters (We Just Make Stuff Up)

Do I Hold Out for Producer Credit?

Presenting Your Demo

Peace and Good Will Songs...Donate Them?

Getting Heard in a "No Unsolicited Material" World

Ten Ways to Get Your Songs Recorded

Demos: Quality Issue

Pitching Songs in L.A.

Casting

Contests

Marketing Your Lyrics