This commit targets FreeBSD and potentially DragonFly BSD. The commit
fixes issue parsing /dev/sndstat when hw.snd.verbose is greater than 0.
Besides, the commit also adds support for audio devices created by
user space daemons, such as virtual_oss.
This implements OSS audio input capturing support for OSS-capable OSes.
FreeBSD and DragonFly (not yet tested on) supports are added as a
starting point.