Just finished building 2.4-dev from trunk on a Mac Os X 10.6.4 (intel)
The sound is working fine (no sound in official stable 2.3)
The intro played at the first run is laggy as hell, 100% CPU, 1fps, distorted sound - both in stable and 2.4-dev.
It's playing fine (5% CPU usage) with any external player. You may consider chosing another playback method/library.
I've played 4 hours with no problems, but currently the game crashes for me at certain moment during the interceptor chase
B_UpdateStorageAndCapacity: current number of item 'rpg_ammo' is negative: reset to 0
B_UpdateStorageAndCapacity: current number of item 'rpg_ammo' is negative: reset to 0
B_UpdateStorageAndCapacity: current number of item 'rpg_ammo' is negative: reset to 0
Assertion failed: (entry), function LIST_GetNext, file src/common/list.c, line 230.
Abort trap
Maybe the old save from 2.3 is causing the problem, I'm trying to find out.