This posting is older than 6 months and can contain outdated information.
  What is LSRefresh?   I didn't find it on my Mac Mini.
  You can find it in the blog at iospirit.com by first clicking on 
"Search", then entering "LSRefresh"  - or via Google.
 I have Mythfrontend 0.21-fixes, but RB doesn't recognize it.  I 
don't see any MythTV option in the RB settings, and it doesn't 
control it when it's running.
  Please see above posts. Depending on which individual build of 
MythFrontEnd you use, it may have yet another different bundle 
identifier in the Info.plist file. That file is located inside the 
application at [..]/MythFrontEnd.app/Contents/Info.plist. The steps 
are these:
1) Change the value of CFBundleIdentifier inside the Info.plist of 
MythFrontEnd.app to org.mythtv.macx.mythfrontend
2) Run LSRefresh and select the MythFrontEnd.app, so OS X updates its 
cached records of the values in the Info.plist you just altered
3) Restart Remote Buddy: for efficiency reasons, RB only searches for 
applications on startup. New applications or altered versions of 
already installed applications will not be recognized by Remote Buddy 
until its next start.
Best regards, 
Felix Schwarz