if you freshly installed Audio Hijack while Remote Buddy was running: 
please relaunch Remote Buddy.

if you had Audio Hijack installed before you launched Remote Buddy: 
please make sure AH was launched at least once and that it resides on 
a volume that is mounted at Remote Buddy start time.

if that does not lead you to the solution, either: please use 
LSRefresh (from the Blog) to update your Launch Services Database 
record for that application, then (re)launch Remote Buddy.

All Remote Buddy Behaviours use the OS X Launch Services for automatic 
app detection. So, if an app is not listed in the LS Database, Remote 
Buddy will not load the associated Behaviour.

Best regards, 
Felix 

yes I installed (and first start) of Audio Hijack Pro was while Remote buddy was running. I restarted Remote Buddy, reinstalled RB 1.1 and ran LSRefreh but nothing helped! AH is version 2.7.3.

For the moment I created my own bevahiour.

Robert 

thanks for the feedback.

I'd be interested to have a look at your Behaviour to see where it 
differs. Could you send me a zipped version (Behaviours are basically 
folders, so Mail doesn't always handle direct drag and drop of them 
correctly) to i n f o _(a)_ i o s p i r i t _(.)_ c o m?

Thanks in advance!

Best regards, 
Felix 

I am having exactly the same problem - Audio Hijack Pro is not a recognised application and is not showing up in the list of behaviours.

I don't want to create a behaviour. Is there anyway I can just force RemoteBuddy to include the behaviour?

Thanks for all your help, this is very frustrating for an otherwise fantastic product!

Thanks, 
David