Hi Malla,
Well, I've been playing around with iHeart for a while now and this is what I found out:
If you have an account with iHeart there currently is no need to use a proxy server to access their radio stations. You only need one if you want to create a new account. Could you please verify this? Or is there a neccessity to use a proxy server to create a new account? Please keep me informed of what your experience is and what exactly you need. Maybe I misunderstood something.
Have a nice weekend
Thomas