I have similar problems just listening to sample songs on Barnes & Noble (using RealPlayer).
My issue is that everytime I open RealPlayer, the ZA alert asks if I want to allow RealPlayer to access my loopback adapter, using port XXXX. Just fill in the blank with a number, from 1029
to 2789 (the port changes everytime that I DENY the access, and try again. As you can tell, I have OCD...<G>
Also, I cannot find any info about using ports on the RealPlayer site. They have some good info, like the info you mentioned,
but they also suggest that we "ask our Firewall software developer" about configuration. A screenshot would REALLY be helpful...
I am NOT opening a port for them, unless I can successfully configure it, so I guess I will not listen today!!!

Message Edited by CADDetc on 06-29-2009 01:19 PM