Initializing sound driver... Sound driver not available. Sound disabled.

[bigrigdriver]

I have no sound in zc2102clin. Allegro.log gives me this:

cat allegro.log
Zelda Classic v2.10 (Build 1)
Checking Files... OK
Allocating quest path buffers (4.00k/4.00k)...OK
Allocating map buffer (185.94k/189.94k)... OK
Allocating string buffer (6.75M/6.94M)... OK
Allocating door combo buffer (159.50k/7.09M)... OK
Allocating dmap buffer (51.00k/7.14M)... OK
Allocating combo buffer (1.49M/8.64M)... OK
Allocating color data buffer (158.11k/8.79M)... OK
Allocating tile buffer (8.00M/16.79M)... OK
Allocating trash buffer (97.66k/16.88M)... OK
Allocating item buffer (6.00k/16.89M)... OK
Allocating weapon buffer (2.00k/16.89M)... OK
Allocating guy buffer (14.00k/16.90M)... OK
Initializing Allegro... OK
Allocating bitmap buffers... OK
Loading data files:
Zelda.Dat...OK
Fonts.Dat...OK
SFX.Dat...OK
Loading saved games... OK
Initializing sound driver... Sound driver not available. Sound disabled.
I can't find any indication of which sound driver is needed.

Do I need to patch the kernel, modprobe a driver, ...???