To get an AIR app to communicate with remote blasze server you need to specify the endpoint on the remote object to go to the gateway of the blazeds / LCDS
<mx:RemoteObject id="heartbeat" destination="heartbeat"
endpoint="http://<ip:port>/<application>/messagebroker/amf" >
</mx:RemoteObject>
like that replace ip:port of the tomcat server and the application is
the java application where which contains blazeds
