Windows Media Center
Windows Media Center, although no longer supported by Microsoft, still has a large user base, and is supported by flirc. Fire up the flirc GUI, and head to the Windows Media controller.
NOTE - As of June 3rd, 2017, WMCE is fully supported and the previous bug which prevented certain keys from working has been fixed. Please update to firmware version v4.0.24
Please download the latest GUI on the website, and you will be prompted of the firmware update.