Check on eBay for a used Frontier Design Tranzport, it's a wireless transport control and just what you're looking for.

DJ....
 
I heard of that remote desktop thing... sounds like the solution?  I will have to research how to set up on the Surface (I have the RT and not the PRO) and the PC.
 
Super G....
 
If the Surface thing doesn't work out, I will check that out.... I think I found that device in my own research surfing the net... it looked interesting.
 
Thanks guys,
Jim

jkleban
too far away for the wireless keyboard (which I do have).....  tried it and I get nothing.

 
But where is the receiver?  Is it in the back of the PC?  Try connecting it somewhere else, e.g. in the front or on a USB extension.  With fewer obstacles between the keyboard and receiver, it may work at greater distances.

SuperG
Check on eBay for a used Frontier Design Tranzport, it's a wireless transport control and just what you're looking for.

+1.  TranzPort is the bomb.  You can find them on eBay even though they've been discontinued.  I use mine on Win7 x64 no problem.  I actually bought a second NOS I keep in the closet just in case.  Also, by the way, no interference or conflict with my MIDI wired control surface (faders, etc.).
 
The manufacturer claims 33 ft but I've had it working greater distances.

DJ....
 
Took me about 30 minutes to read and configure both my WIN 8 DAW PC and the SURFACE RT.... quite easy actually and it works like a charm... so cool to have the complete SONAR GUI screens portable.. I have setup workstations both by the keyboard rigs and the guitar amp room to be able to record and track instrument parts without going back and forth to the PC.
 
I can't thank you enough and the best part is that it was FREE for me in that I already had the SURFACE.
 
Thanks,
Jim

I'm getting an itch to do a Sonar transport control app for Android phone. I've had great success playing with the Sonar's control surface SDK. 

Glad I could help.