Add keyboard functionality to preview player

[Headphaze]

This is a feature request i've forwarded on from Zendesk. Even though it's not essential, I do agree it would be nice.
Some video editors and video content websites (for instance YouTube) have keyboard shortcuts for navigating playback rather than clicks using a mouse.

K - Play / Pause
L - Skip forwards x seconds
J - Skip backward x seconds

Is this possible to add keyboard skipping features to the player?

I'm aware that the spacebar currently acts as a play/pause control (which should be kept), however to my knowledge there's no skipping keys.
NB. I think skip duration in this case would be somewhere around 5 seconds for freesound