Can't use more than one sound sources

[juxas]

I changed sysctl.conf and installed OSSv4. Everything worked fine. But after a day or shorter something broke and now i can only use one sound source.
For example xmms, but if i want to enable Sound System it says it's busy and no matter what dsp using. osstest works fine. cat /dev/sndstat shows no installed devices. Also when xmms is playing and i'm trying to enable Sound System and press "Test Sound" button it crashes. . Now i am using snd_ich, but OSS was better and i want it again. Also tried to reinstall OSS, but it not helped.

Please help me.
Thanks.