aplay -l = command not found

[deHakkelaar]

Yeah your right, device tree layer is the way to go.
But you still have not run "sudo apt-get update" ?

And it looks like you installed "xbian-package-xbmc-alsa" yourself while not needed.
I dont have it installed on my Pi's:

Terminal

$ sudo dpkg -l xbian-package-xbmc-alsa
dpkg-query: no packages found matching xbian-package-xbmc-alsa

To remove:

Terminal

sudo apt-get remove xbian-package-xbmc-alsa

Fix install afterwards:

Terminal

sudo apt-get -f install

And try again:

Terminal

sudo apt-get install alsa-utils