using google for "sony parts" and the part # supplied in that post in the search field on sony's webiste, i located:
176957211
CABLE (WITH CONNECTOR)
Currently In Stock: Yes
Unit Price (in USD): $60.79
at
http://servicesales.sel.sony.com/web/productSearch.doand the transmitter from sony also:
875924285
IC TOTX176
Currently In Stock: Yes
Unit Price (in USD): $25.90