I want to know the sites wherei can download the karoke of hindi songs(Bollywood) for free of cost.Help me... ♫

Well, you will find no postings for illegal sites here, but fortunately there are some free and legal downloading sites out there that may suite your needs. MP3.com (http://www.mp3.com) has a small selection of bollywood music for download, so also does Last.fm (http://www.last.fm/music/+free-music-downloads/bollywood). Some others to try may be BollyWoodMusic.com (http://www.bollywoodmusic.com/) and saavn (http://www.saavn.com/). Good luck and do some google.com (https://www.google.com/search?q=bollywood+music+sites) searching to find more.