Hotkey support for features such as next/prev track, mute, pause, etc.

[Tyr808]

Love what we've got with this so far, it's simple and brilliant. What I would absolutely love though would be the ability to hotkey some things.

For example I have a few youtube live channels in a playlist that do copyright free music. Even just a single button to cycle forward one entry at a time in the playlist would be a godsend.

I don't know if this would even be possible without becoming significantly more complex though and it very well could be out of the scope of this project and I don't want to sound greedy here :)