For those who crave for Tamil Radio, here is a good source and it is FREE and legal too!
http://www.aahaafm.com (Sorry, for some reason a hyperlink was not formed. Click on the title of the blog 'Tamil Radio' to go to the page)
I particularly like the show Rahmaniya, which is so obvious. I try to listen to Chinmayi's Aahaa Kaapi Club in the evenings (morning in India)too, but forget to turn it on at most times :( . Probably recording it and listening to it in the morning would be a good idea.
It's been there for a little more than one year apparently, and I get to know of it NOW!!!