検索の中に "snd-card-dummy が必要かも" っとあったので
[root@bh6 /root]# insmod -f snd-card-dummy
Using /lib/modules/2.4.18-0vl3/misc/snd-card-dummy.o
Warning: loading /lib/modules/2.4.18-0vl3/misc/snd-card-dummy.o will taint the kernel: forced load
/lib/modules/2.4.18-0vl3/misc/snd-card-dummy.o: init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters

フォース掛けてもだめ。これが入れば鳴る?