$ /usr/lib/oss/bin/ossmix beep 1   
Value of mixer control beep set to 1
[tapio@mercury ~]$ cat /dev/sndstat              
OSS/FreeBSD 3.99.4b (C) 4Front Technologies 1996-2006

License serial number: E00000010
**** UNREGISTERED VERSION ****

Drivers: ALL
License will expire after: 12/2006


*** Unregistered version ***

Build: 200607070150
Kernel: FreeBSD 6.1-RELEASE #0: Sun May  7 04:42:56 UTC 2006
    root@opus.cse.buffalo.edu:/usr/obj/usr/src/sys/SMP


Card config: 
Intel High Definition Audio (Azalia) controller at 0xdfebc000 irq 21

Audio devices:
0: Intel High Definition Audio pcm-front output
1: Intel High Definition Audio pcm-center/LFE output
2: Intel High Definition Audio rec input
3: Intel High Definition Audio spdifin input
4: OSS Virtual Mixer v2.5 Playback CH #0 (GRC3)
5: OSS Virtual Mixer v2.5 Playback CH #1 (GRC3)
6: OSS Virtual Mixer v2.5 Playback CH #2 (GRC3)
7: OSS Virtual Mixer v2.5 Playback CH #3 (GRC3)
8: OSS Virtual Mixer v2.5 Playback CH #4 (GRC3)
9: OSS Virtual Mixer v2.5 Playback CH #5 (GRC3)
10: OSS Virtual Mixer v2.5 Playback CH #6 (GRC3)
11: OSS Virtual Mixer v2.5 Playback CH #7 (GRC3)

Synth devices:
0: OSS Virtual Synth v2.5

Midi devices:

Mixers:
0: Intel High Definition Audio STAC9200
1: Virtual Mixer

History:
dsp0: pid 1172 cmd 'osstest' OUT