What is a good free replacment for pandora?

I have a samsung GS2,and i have been using pandora a lot(like on my way back and forth to work),and i just got an email that that i am near my 40 hour per month limit,and i can't afford to pay for the monthly fee.

So i am going to quit using them and switch to something else,any suggestions?

(iheartradio) its on ios, idk about android, but practically the same thing as pandora if not better.

Can i put all my stations on a suffle,like i do on pandora?

Soundcloud is a good alternative. I use it regularly on my PC and my Galaxy S3 but if I were to pay $10 a month, Spotify would TOTALLY be worth it. I am not sure SoundCloud will have all the artists that Pandora has though.

grooveshark :/

Isn't groveshark illegal? Anyway, why not try slacker radio? Way better than pandora and spotify.. 

+1 for Slacker Radio. Also, Spotify offers a radio service for mobile platforms, for free. To stream individual songs, make playlists, etc., you have to be on a PC, or pay for theirpremium service, but the free services are pretty good.