Online Radio Station

We have released 2 podcasts so far on Indie Radio Nashville. To this posting, we have had 70 listens on the first podcast and 19 listens on the second podcast. Hardly enough material to run a 24/7 rotation online. I think musicians get more exposure if we are limited to 6 songs per podcast, yet I think an online radio station would be a cool idea.

My goal in the end is to have enough material to run an indie radio station. I want to have charts and everything to help get exposure. As I am waiting for more material, I am looking for online radio hosts that are free, because running an online radio station can be pricey. What do you guys think? Know of any free hosts?