Tech of the day: My VM has lost its voice

As I previously mentioned, I run Arch Linux in VirtualBox on my Windows machine. I could playback audio after I installed the ALSA tools and made the adjustments (see my old post) However, it stopped working after I moved the VM to a new HP notebook. When I try adjusting the PCM channel through amixer, it was simply not there. Again, I found the solution from the same ALSA entry on ArchWiki (thanks!) The section was about making sure the sound modules were loaded.

Basically I found from lsusb that my sound module is: snd_intel8x0

So I modified the MODULES line in /etc/rc.conf to this:
MODULES=(snd_intel8x0 snd_pcm_oss)

And reboot, unmute and adjust the channel volumes through amixer again. Voila! I got audio back!

To make the Amixer settings permanent, follow these steps.

And I have found a post about getting EMU 0404 USB (my external sound card) to work in Linux. Guess that's something I should try in the future.