I have just recently been looking, I have found apps for xbmc and boxee remote control and I have used Wyse pocketcloud to remotely control my pc from my nook.
The app that U suggest is just a remote desktop app, where u control the mouse pointer like in normal windows.
I was thinking maybe there was something only for media use.
I think you want G-mote , When I was looking for an app for steaming videos to my Nook from my htpc . G-mote kept coming up which looks and acts like a remote control. Could not definitively nail down if it could stream avi files with sound to my Nook color .
I currently am using teamviewer , to access my pc from anywhere over wifi to nook color . Could stream video but I could not get sound.
I use myRemote app. It has a WMC designated button with all media control control buttons. Full screen mouse and it uses whatever keyboard you have installed.
Finally I installed Unified Remote which has separate remote for Keyboard, File manager, Firefox, Media Player Home Cinema etc.
I think its the most complete Android player and it works great!