Jikes. That is worse than crap.
First, the typical helpdesk questions:
a. Does this happen only in Generations, or in normal Quake 3, other mods and other games?
b. I don't think we have anything about this issue in our F.A.Q., but have you checked?
c. Give us some more info here.. when does it happen? All the time? Have you applied the com_hunkmegs setting? What's your setup, soundcard, etc?
The map PK3's should go in your Quake3/Generations folder (or Quake3/baseq3, that works too). As soon as they're in, you're ready to rumble.
Use:
Or use the map selection menu. Alternatively, use one of the gen_
.cfg files to launch a mapcycle.