14) AirTunes is just their branding for streaming over wireless... specifically from iTunes. I have not personally tried AirFoil
Eug - Many thanks for the details and insight. Re the Airtunes question, my concern there was the not so much it vs other software, but the prerequesite that one "can only stream music to the Airport Express via Airtunes.
Products like AirFoil may address it.
Anyway this doesnt sound (no pun intended) like its a smooth no-brainer, especially on a Windows platform. I might be able an AE from a friend and play - that would be best. Dont think I am ready to buy new with all these caveats.