I love music and love to listen to songs when I am working. I personally don't like to download songs and listen to those. I like the surprise of "what would be the next song". So listening to online radio is the best option for me. There are plenty of resources where you can listen free hindi radio online. If you like your own music collection, there are ways you can listen to your home media radio on mobile.
In.com just launched a new online radio service called "Radio Artiste". The radio is basically similar to "Pandora" but with pre-defined stations based on the actors, actresses or singers. So if you are a Shahrukh Khan fan and want to listen to all the songs of Shahrukh khan, you can tune into Shahrukh Khan Radio.
Currently Radio Artiste offers some 10 predefined ration stations (Madhury Radio, Shahrukh Khan, Salman Khan, Rajnikanth, Lata, Asha Bhosle, Kareena Kapoor, Aamir Khan, Chiranjeevi and Kishor Kumar radio). Once you select the actor or singer you want to listen, you will see the details of the actor/singer. You can comment on the radio or interact with other fans.
The radio lacks the variety and more options. What if you want to listen to Sunidhi Chauhan, Sonu Nigam or Kumar Sanu or say Udit Narayan. Those singers might have sung songs for one of those actors/actresses but there is no dedicated radios for those singers.
Also, the radio lacks mobile interface. It would be nice if In.com can develop an application for iPhone/Android so that users can take this radio on the go.
Currently I am listening to Salman Khan radio while writing this post and I am liking it. It looks like In.com might introduce advertisements in between songs down the road once they gain enough listeners.
So check out Live Indian Radio - Radio Artiste