Can keyboard multimedia key events be captured?

Most modern keyboards for desktop and laptop use have some keys for controlling multimedia applications, such as a Play/Pause button, Next Track, Previous Track etc.

There does not appear to be a KeyCode value for these. I was expecting to find something similar to:

 if (Input.GetKeyDown(KeyCode.PlayPause)) {
     // ...
 }

Is there a way that I can detect a 'Play/Pause Key Down' event?