I use iTunes to listen to music and recently aquired an Airport Express device. iTunes streams music wirelessly to Airport Express, which then connects via analog audio to any standard speaker system.
Both the computer running iTunes and the Airport Express connect to my wifi home network.
HIPS is blocking iTunes from finding my Airport Express. I know this because whenever I kill all HIPS processes shortly after my Airport Express appears as an option for outputing iTunes audio.
I've tried desperatly to add rules in the IPS and Firewall tabs including all the iTunes applications I could think of, including Aiport and Bonjour software, to no avail.
Any one had this problem too and was able to fix it?