Just documenting this for others going forward, hopefully save you some time... Attached is my Eventghost xml file, as well as the AVR-3808ciSerial Protocol I used to program it.
The Amulet remote's learning abilities are sorely lacking, but don't get frustrated.
Simply buy a USB to Serial converter off of Amazon, and plug the serial end into the back of the Denon receiver, and the other end into your computer. The Denon 3808ci takes the 9 pin RS-232 serial male end (has the female on it).
Next, add in the Denon Plugin in Eventghost.
To do the quick presets, you want to use the very bottom-most command, "Raw command". To set to preset 1, the command is MSQUICK1. For 2 - MSQUICK2. For 3 - MSQUICK3.
Then in VoxCommando, set up a command of Eventghost WatchTV, click Save and Execute in the lower right of the command builder.
In Eventghost, drag the Broadcast.WatchTV lightning bolt out of the log window and up to your Eventghost Macro for the Denon preset.
Enjoy!