Whenever I try to run speaker-test -D default -c 2 while I have youtube playing on chrome it says this:
gek@gek-pc:~$ speaker-test -D default
speaker-test 1.1.7
Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Using 16 octaves of pink noise
ALSA lib pcm_dmix.c:1099:(snd_pcm_dmix_open) unable to open slave
Playback open error: -16,Device or resource busy
Also, SOME (not all) software will just refuse to run sound if chrome is open, in particular kega fusion.
This annoys the hell out of me