I have a bunch of scripts that run when I exit the player. One of them causes ntpdate to be run. Someday, I might rig them up to run from init, before the player starts.

You can find them at http://www.differentpla.net/~roger/empeg/car/files/

base.tar.gz is the binaries. configs.tar.gz is the auto-selected stuff that sets hostnames and stuff.