Hey man, yeah sure no problem.
But it helps if you have an idea of what demo you want. There are a lot of demos on the server, most are crap.
If you have a rough idea for the demo in mind;
Players > Map name > Time of game
The name format of the server for the demos is as follows:
Demo-NICOSONIC-Bambislayer-kAoS_2k-Volkmos-DM-Campgrounds-U3-Fix-2012_02_19-23_30_33.demo
So you can see from that, that if you can provide some info on the demos you want, it makes it easier for both of us to get the ones you want.
Also the kAoS server runs a few custom Mutators, therefore to watch the demos recorded form the server you have to make sure you have the same mutators installed in your system. If you have versions of them in your cache, they won't work, you need to have the corresponding mutators in your directory not the uT3 game cache.
So when you try to play a demo and it won't play, you need to go to your log file to see what is listed missing from your system, for the demo to play back properly, and then install it into your uT3 game directory.
So you have to post back here, what mutators are missing form your setup, so i can post them here for you and you can them install them into your uT3 game directory.
Sounds complicated, but only for the first 5 minutes... its a breeze once you understand how it all works.
Also to make good uT3 movies you need to use Rcam. For Rcam you go here:
http://www.rypelcam.com/
kAoS & Rcam are partners, we work together on Rcam, so if you have any questions feel free to ask, k.
You're in luck, 2k is an Rcam expert and has a lot of movies released into the worldwide uT3 community, hes a bit on a Spielbergo with the videos, hes got a brand new movies coming up too, I suggest you check it out and all his other awesome work.
I the next cou0ple of weeks, the kAoS website will be back in a new format that focuses on all our movie making and resources, so you will be able to have a easy access to all our work, to check out.
For starters here is the demos from last nights game against me. (gg btw)

3.84mb
http://kismet.kaoshq.com/_kAoS_uT3_Demo ... os_001.rar
