This posting is older than 6 months and can contain outdated information.
I thought it'd help others so I uploaded the file online, here's the link:
http://www.mediafire.com/file/qmenmkynjmy/Plex.rbscriptedbehaviour.zip
Let me know how that goes :)
BTW, make sure you uncheck the default Plex behavior in order to use the custom one. Here are Felix's instructions:
"Please note that, when you add your own Behaviour for an app that's
already supported by a Behaviour that ships with Remote Buddy itself,
which of the Behaviours will be picked to control the app is undefined.
You'll definately want to make sure that:
- you uncheck the checkbox in front of Remote Buddy's *own* Behaviour
in Remote Buddy > Prefs > Behaviour (so it's no longer used by Remote
Buddy).
- you do have only one copy of your Behaviour lying around in ~/
Library/Application Support/Remote Buddy/Behaviours"