Answer:
There are literally tens of thousands of karaoke files in UseNet (Newsgroups) I can see just under 1 million files using Giganews (pay per month newsfeed) Your mileage may vary with ISP newsfeeds. If your ISP provides access to newsgroups, you're home and free. Refresh the grouplist in your newsreader, type "karaoke" into the group search window and subscribe to one or more of the dozen or so groups. The majority of the karaoke files you'll find are home made and are donated into the public domain by the creator/poster, so there are few DRM and copyright worries as long as you don't try to sell them or claim them as your own work. Most of these groups are English language, and just one is Japanese. I can't see a group devoted specifically to Indian karaoke music or music for other cultures, but they may be listed under the language of that country or culture. There is no effective consorship or filtering in usenet, so be aware that the risk of downloading a virus disguised as a karaoke file is higher than when downloading from paysites, and about the same as downloading from P2P Oldguy-uk