From readme:

Wouldn't be cool if you could run Remote Play from your laptop, desktop, or
perhaps your phone?

After 2 weeks of hardcore reverse-engineering, it's now possible!

I would like to thank Dark_AleX for hacking the PSP. Without his work, ORP
would not be possible. I would also like to thank TyRaNiD for psplink and
prxtool. Using psplink makes this type of work almost painless! Thanks to
jas0nuk for the essential PRXdecrypter utility.

Controls
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The player currently implements these keyboard mappings:

ENTER X
F1 Triangle
F2 Square
ESCAPE Circle
PAGE-UP L1
PAGE-DOWN R1
ARROW KEYS D-Pad
HOME PS Button

CTRL-Q Quit Remote Play

Not implemented, yet:
START, SELECT, and the analog nub.