Most of the control traffic is encrypted except for the ones that go over the regular http port 80. Most of the bandwidth hog is the data traffic and not the control traffic. The Kazaa2 pdlm classifies the traffic by looking for a Kazaa specific string within the Kazaa Data Traffic - regardless of the port number used.
Here is a sample config:
match protocol http url *topsearch* - for the control traffic on port 80
match protocol http host www.cms1.net - control traffic on port 80
match protocol http host *kazaa* - control traffic on port 80
match protocol kazaa2 - data traffic
match protocol fasttrack - data traffic