Itunes keeps stopping

Maybe it's your Network.

Agreed, it's probably the network or interference from some other device (portable phone, remote printer, etc.). It could also be in some of the buffer settings within iTunes. I can't recall which are the usual suspects but you might do a search on optimizing iTunes/airport express streaming settings. Short of that an ethernet connection should solve it, but that defeats the advantages of wireless. If iTunes is not doing the same stalling while listening on your native host computer (not streaming) then you know it is not iTunes, but the network

I have same problem, started about 3 days go right after I did software update.
Just stops intermittently, sometimes for 5-10 seconds.
The iMAC and Airport are within 10 feet.
Never had this happen before, no solution so far.

I USED to have this exact issue, which is aggravating to say the least. (Not as much as world hunger, but you know what I mean.)

I have noticed that after I upgraded iTunes to 10.5.1 (currently the latest version), this hasn't happened. (Knock on head.)

Oh,the joys of computer audio !!!!!

My friend had these issues and I think he changed to a different "channel" for the wireless - something other than default. I don't remember all the things he tried. Although, if it just started happening, it may be something new.

Both OS and AE are current. No microwave being used at that time. Latest version of iTunes installed when problems started.