Debian sarge, alsa drivers with oss emulation, vendetta gives error:

/dev/dsp: Input/output error

Other programs using oss work fine, i.e. when I do:

cat some_file > /dev/dsp
or
mplayer -ao oss some_movie
or
xmms with oss output plugin,

I heаr a beautiful sound.

If I do:
/etc/init.d/alsa stop
then
modprobe cs46xx (native oss driver),
sound in vendetta works without problems.

I can't use oss by default, since many other software work with alsa better. How can I make vendetta work with alsa oss emulation?