Sony S-AIR Speaker System

[JU5TY]

I have a Sony STR-DN1000 AV Receiver which is S-Air compatible with the optional EZW-T100 S-Air Transmitter.

I have a digital coaxial audio cable connecting the computer in my bedroom to the AV Receiver so I can listen to music off my computer.

I’ve got the speaker setup sorted in the front room, I’d like to use one of the S-Air speaker systems in my bedroom, I’ve seen these two on the Sony USA website:

AIR-SA10
http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10151&catalogId=10551&langI d=-1&productId=8198552921665366461

AIR-SA50R
https://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langI d=-1&productId=8198552921665870130

I can’t find either of these models for sale in the UK?

I’ve found this one in the UK, but it appears to just be an add on speaker for the IPOD S-Air kit. Would it work linking it to my AV S-Air Receiver?

AIR-SA15E
http://www.superfi.co.uk/index.cfm/page/moreinfo.cfm/Product_ID/5881

I also read that the S-Air Speakers will only play audio transmitted from the DN1000 A/V receiver if the source components are plugged into the analog audio jacks on the DN1000. You cannot play audio from digital components. Surely this cant be true?