Don't know what type of audio you're using to DJ, but the newer version of Hoster will play WMA's and MP3's.
Check out the recent changes regarding DJ additions on the product page at this link....
http://www.mtu.com/basics/karaoke-hoster.htm
You can also import WAV tracks through Microstudio as CDG's and then import them to Hoster for DJ work.
MTU is also advertising the version of Hoster about to be released any day will allow almost any CDR/RW drive to read CDG. You may already be compliant if you get the newest Hoster. Check it out on the news page at this link.
http://www.mtu.com/support/news.htm
George