problems with alsa and YMF754

[docd]

hi,
i have a problem with alsa and my yamaha soundcard (ymf754 chip).
alsa works, sound comes out of my spdif output, however, volume control doesnt work on spdif, except with alsamixer. i cannot figure out what to do, to get that thing working for normal applications, xmms for example.
any ideas what i could try to get that done?

cya.