This module has a poor name, since it can be used under FreeBSD and

Linux.  Perhaps winaudio would be better, as it would offend both
parties equally.

tg@freebsd.org: allow this module to compile under FreeBSD
(he suggests voxwareaudio)

Modules/linuxaudiodev.c

@@ -27,10 +27,20 @@
 #endif
 
 #include <sys/ioctl.h>
+#if defined(linux)
 #include <linux/soundcard.h>
 
 typedef unsigned long uint32_t;
 
+#elif defined(__FreeBSD__)
+#include <machine/soundcard.h>
+
+#ifndef SNDCTL_DSP_CHANNELS
+#define SNDCTL_DSP_CHANNELS SOUND_PCM_WRITE_CHANNELS
+#endif
+
+#endif
+
 typedef struct {
     PyObject_HEAD;
     int		x_fd;		/* The open file */