Kazaa is back in music industry with a new business plan. Kazaa, the most popular file-sharing service was shutdown in 2006 as part of agreement with the music industry. Now they are launching a web-based legal music download service with the support of all four major labels.

Kazaa’s sudden rise has been featured on CNET, Gizmodo, Billboard.com and BBC News, to name just a few. This new Kazaa service appears to be launched with the help of music industry because Kazaa’s download offering is going to feature almost 1 million tracks from all the major genres. It uses Microsoft’s Windows Media DRM and offers unlimited download for around $20 per month.

The company issued a press release 2 weeks ago that was as strange as they come: The Kazaa.com domain name was misspelled; a well-known hacker who committed suicide last year endorsed the service. And it featured a number of links labeled “free music” that was pointing to Kazaa.com.

This is just the beginning; Kazaa will have to do a lot to make a solid impact!