Airport Express - Discontinuous Audio when used for streaming music

Question

I recently installed a new iMac with Leopard along with Time Capsule as the base station connected wirelessly to the iMac. Added Airport Express to this network and everything looks like it works after a couple of tries.
When I play iTunes on the iMac and select the Airport Express speakers, I get a discontinuous sound. iTunes plays the music for 10 sec, stops for a few sec, then picks up where it left off...repeat endlessly.
iTunes plays back fine on the computer's speakers.
Any thoughts on how to fix the discontinuous music streaming ?

Answer 1

1. Check to make sure that iTunes isn't hogging all of your CPU when it is running. If your CPU starts running at 100%, you will get audio dropouts. Make sure that unnecessary processes don't load at boot time.
ok, cpu is fine, between 0 and 25% when playing
2. In Quicktime, Edit -> Preferences -> Quicktime Preferences -> Audio -> uncheck "Safe Mode". If this doesn't work, then recheck. You should reboot to make sure.
DOne, rebooted, undone, redone, nothing helps
3. In Airport Express Utility, Wireless -> Wireless Options -> Check on Use Interference Robustness
also done
4. If you have a lot of wireless internet routers in your neighbourhood you can try changing your wireless channel. Netstumbler will show you what's going on in your area.
tried all of the 13 channels!
5. If using a router and your Airport Express is a client of your router, move the antennas on your wireless router. One of the antennae should be at a 45 degree angle from the router so that the two antennas don't cause a conflict with each other. (Imagine dropping two stones into a pool of water where the waves created by the stones are equal to the radio waves produced by your router; the waves hit each other and distort the path of each one; by moving one of the antennae on an angle, this conflict is avoided.)
antennas turned as you told me, still not better
6. In iTunes, you might try changing the following: Edit -> Preferences -> Advanced -> Change the buffer streaming to "small" (or one of the others).
done, and also tried "medium" and "large"....
7. If you are using a third-party router, and you are comfortable with changing the settings, and if you have this setting, you might want to try lowering or increasing the Beacon Interval.
not familiar with this, what is a third party router? I have one main router for adsl and digital tv, + trying to get airport working for music...
8. Of course, don't have a metal filing cabinet, or hollow tubes (yeah, even toilet paper rolls -- so no iTunes in the bathroom, please) -- as these would also interfere with broadcast.
no interferences, no metallic cabinet, no toilets around lol
what can I do more? give it back to the shop, buy a MAC computer instead of my pc? I think I'm going to give that thing back to the shop....
Thank you very much for all your help but here I'm realy, realy getting fed up with this. Either it should work perfectly, either not, but here, sometimes it works, sometimes not, and there's no appearant reason when it drops.....you'll never know when it's gonna happen and for how long.
So disapointed!