Is it possible to use my airport express only for AirTunes, not for connecting to the internet? Do I have to first create a network before iTunes can recognize remote speakers? I would love to be able to use the new airport extreme (n) to connect to the internet, but use my excisting airport express for airtunes only. I dont' want to "extand range" because of the speed reduction due to the addition of non-"n" devices. Help Please!