1. Open the Trisquel menu. 2. Pick *System Settings*. 3. Go to *Keyboard*. 4. Switch to the other tab: *Shortcuts*. 5. Click *Custom Shortcuts*. 6. Click the plus button. 7. Give the shortcut a name like *PCM up*.8. Enter a command like, "amixer set PCM 1+". This will raise the volume as much as alsamixer would after pressing the up arrow key. *2* is also suitable, but *five* is probably too much.
9. Apply. 10. Click *Disabled*. 11. Use the multimedia key as though it would increase the volume. 12. Press *Reassign*.13. Repeat steps six through twelve for the *PCM down*, but use a hyphen instead of a plus symbol in step eight. 14. For another control like *Headphone*, repeat these steps, but hold down the *Ctrl* button while using the multimedia key.
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