I am using the Gyration MCE Air Music remote with a new Gateway X2840-01 HTPC. The remote was purchased new off EBAY for $ 39.USD, and delivered in 2 days.
As mentioned, this is the same technology found in the Wii, and using the remote will give your arm a good workout until you learn to work with it.
1. It does work well 3M to 10M away from the PC as a mouse. Center control button moves the mouse, with the two attached " wings " to the button being the Left and Rick click features.
2. No instruction manual came with the package: I do not know the function of a few buttons, and could use one.
3. The remote can sync to the Flatscreen and DVD, but I have done this as yet.
4.. It is very good to use with MCE, but I do not use it for music ( I have a B&O system I am used to using ). I did try the music feature and it does provide a listing of my PC music files.
At the remote top, the screen provides the following information:
Regarding the latter (OPTIONS ), this appears to be limited to SHUFFLE, and REPEAT OFF.
The remote came with a USB-RF key, placed into a USB slot in the back of my PC, next to a Bluetooth and Optical key. No problems thus far with either keys being placed next to it.
It reportedly can turn the PC on and off, but I prefer to do this manually. It is great for reading mail. news, and launching the MCE features. Serious PC work on documents, or photography indicates the remote is a bit slow to the race, so I switch to a BT Di Novo Edge keyboard and mouse for more accuracy and speed.
More to follow: I hope this information is useful to someone.