Unfortunately, I believe the answer is no. Hoster is designed to be run by a KJ or host, with everyone searching and adding the songs to the list, they have all the functions of Hoster at their fingertips. So you would need to play rotation cop and check the list ever few minutes to make sure people are not moving their songs, or have a single 'impartial' person adding the songs for everyone. Of course you could take the less civil route and announce that anyone found moving their songs ahead in the list gets a beatdown from the other 19 people...
Maybe someone else will chime in with another alternative.
Flip