It has to be possible with optware, pretty easily.
Can someone post a guide for teamspeak 3 server setup on tomato based router?
It is not possible, teamspeak is closed source and does not distribute a binary compiled for mips.
Unlike what some like to think, the fact that a binary for linux exists and that your router also happens to be running linux does not mean that we can forget about cpu architecture.
As far as I know, the available server is compiled to run on x86 only.
you can use umurmur
Polish tutorial: http://openlinksys.info/forum/viewthread.php?thread_id=12844
ipkg package: http://tomato.groov.pl/repo/umurmur_0.2.5-4_mipsel.ipk