Lol, I think I got an acceptable method. It is like the bubble sort method I explained before, but this time you should "divide" your file into groups of 10 songs, pick a random song from the first group, have it compared with a random song from the second group (and switched), then take a random song from the second group and have it compared with a random song of the third group, etc. After nine compares (with 100 songs), you start over again with group 1 and 2. You should also remember for each nick and file which groups he compared the last time he was online. After a few rounds you will have a rough ranking order. Maybe 10 round (=90 compares) should give you an acceptable order.
I would indeed have a rough ranking order, but the groups of 10 would still have no particular order, so I'd need to run another script of your first idea to get those into the right order. All in all, still quite a lot of work when you have a lot of songs. Still, that's the best idea so far.
