from the shell:
wget ftp://ftp.eenet.ee/pub/FreeBSD/distfiles/linuxq3apoint-1.32b-3.x86.run

sudo sh linuxq3apoint-1.32b-3.x86.run

them :

Q3 1.32b linux-i386 Nov 14 2002
----- FS_Startup -----
Current search path:
/home/ruben/.q3a/baseq3
/usr/local/games/quake3/baseq3/pak8.pk3 (9 files)
/usr/local/games/quake3/baseq3/pak7.pk3 (4 files)
/usr/local/games/quake3/baseq3/pak6.pk3 (64 files)
/usr/local/games/quake3/baseq3/pak5.pk3 (7 files)
/usr/local/games/quake3/baseq3/pak4.pk3 (272 files)
/usr/local/games/quake3/baseq3/pak3.pk3 (4 files)
/usr/local/games/quake3/baseq3/pak2.pk3 (148 files)
/usr/local/games/quake3/baseq3/pak1.pk3 (26 files)
/usr/local/games/quake3/baseq3
./quake3.x86/baseq3

----------------------
534 files in pk3 files

Running in restricted demo mode.

----- FS_Startup -----
Current search path:
/home/ruben/.q3a/demota
/usr/local/games/quake3/demota
./quake3.x86/demota

----------------------
534 files in pk3 files
----- CL_Shutdown -----
-----------------------
----- CL_Shutdown -----
-----------------------
Sys_Error: Couldn't load default.cfg

then in the shell:

wget http://fnorded.org/quake/pak0.pk3

and

sudo mv pak3.pk3 /usr/local/games/quake3/baseq3

problem with the sound:

------- sound initialization -------
Could not mmap dma buffer PROT_WRITE|PROT_READ
trying mmap PROT_WRITE (with associated better compatibility / less performance code)
/dev/dsp: Input/output error
Could not mmap /dev/dsp
------------------------------------

check to write permissions /proc/asound/card0/pcm0p/oss

if not

sudo chmod 777 /proc/asound/card0/pcm0p/oss

then in the shell

echo "quake3.x86 0 0 direct" > /proc/asound/card0/pcm0p/oss && quake3

and enjoy