How can I remotely start an application on my android phone? I have an older phone (Android 2.x) that I am not using as a phone.  I am using it in a carboard projector.

I would like to be able to use my desktop computer to instruct it to play a youtube video.  I tried Airdroid, but it doesn't seem to have this functionality.

Any ideas?
You can try AndroidLost app, the premium version of which has this facility.