[asveikau]

> Godhelp you if your application tries to use weird ALSA or even worse, OSS features.

What's a weird ALSA or OSS feature? What do you expect in its place?

OSS as an API was really dead simple. open, ioctl, read or write... That interface is still working fine on FreeBSD.

There is an OSS to ALSA compatibility driver.

I'm sure whatever you're expecting (pulseaudio? yech.) can fake being an ALSA device enough to fool anyone.