kldload snd_driver_load work? That should load all available drivers. A
cat /dev/sndstat would then tell you what's actually detected.
kldload: can't load snd_driver_load: No such file or directory
mpg123 which does play mp3 through the speaker... But what I'm really looking for is an app where I can generate various sounds which will for example, scare cats away from the garden (which they use as a toilet) .