When trying to use the media keys on my keyboard, the launch_media button always opens Windows Media Player (WMP) on Windows 8. I've checked the registry, and the key is mapped to .mp3, the default program for both .mp3 and .cda is set to my player, MusicBee, and using a AutoHotkey keyboard hook, it does seem to report the keys using the standard commands, rather than being specialized for my keyboard.
The keyboard is the Lenovo Enhanced Performance USB Keyboard AKA SK-8815, and I'm running Windows 8 Pro.
I've also tried uninstalling WMP, with the result of pressing the button being a window that pops up labels "Assign a Command," which then opens the Microsoft Keyboard and Mouse Center (MK&MC) and reports itself as, if I remember correctly, a Microsoft 6000 keyboard; changing settings there has no effect, and it doesn't appear if MK&MC is launched normally.
Possibly related (and also annoying), the play pause button pops up a window saying no CD/DVD was found in drive. This seems to originally correspond with Daemon Tools, since I did also get "CD is application, not media" errors, but this still occurred after fully removing the virtual drive.
How can I fix these problems?