Just tested with 5.0.34 on the C8 firmware, and very cool, the UserPlayer event works now! Thanks!
Unfortunately, this is still broken:
<event type="NightMode" value="on" comment="1"/>
My use case for the night mode event is two-part:
* I have a cron job set up to run every 15 minutes to turn on NightMode automatically.
* I have a httpd running on the chumby, which serves up a page of icon buttons, which will run small scripts to play/stop shoutcast streams, adjust volume, play a white noise mp3, reboot, and turn on/off night mode. The cool thing is that I can set up the chumbrowser to launch the page, so I get a custom "control panel" that I can run from my smartphone or the chumby itself.
Basically, I am using the Chumby as a glorified alarm clock, and prefer the night mode clock all the time, unless I am showing the browser page.
Screenshot (from iPhone):

Hopefully, this is an easy thing to fix if/when you sit down and look at it.
(BTW, if anyone is interested, I will be happy to share the html/cgi scripts for the web page)