You can buy Indian film music online now. The store offers music in Windows Media Audio (.wma) files. Quoting from the site -
Soundbuzz is a digital music service provider and the only provider with a regional focus on the Asia-Pacific markets. Soundbuzz is a 'one-stop-shop' for the digital music media offering technology, creative, editorial and legal services to facilitate digital music commerce. Soundbuzz works with the world's leading digital rights management (DRM) technologies endorsed by the record labels that allows it to distribute its music safely and securely:Individual songs cost as little as Rs 12
Soundbuzz works primarily with Microsoft Windows Media Rights Manager, the end-to-end digital rights management (DRM) system that offers content providers and retailers a flexible platform for the secure distribution of digital media files.