I did a search, but it yielded nothing.  I'm sure it was mentioned here before, since it's probably the only way I know about it.  
http://www.heavykaraoke.com/
Bandoke - ability to do vocals or any of the instrumentation.  DVD format.  Has anyone tried this?  I'd LOVE to get the whole collection, but it is EXPENSIVE (up to $50 per DVD).  I'd be concerned about the DVD format for use on a computer as just karaoke.  Never used a DVD format before, and all the extra removable tracks may cause an issue for just the karaoke versions on a computer based system?  Any input or comments would be great.