[Park Seward]

No. Don't buy those transformers. They are designed to convert AES 110 ohm to match the impedance of a 75 ohm video cable for long cable runs. It will NOT convert from S/PDIF to AES.

"...our I/O adapters are designed to passively convert all standard AES/EBU digital audio signals from 110 ohm/XLR3 Output (@ 4.5 Volts) to a 75 ohm BNC coaxial cable and then back again to a 110 ohm/XLR3 Input (200mV min)"

http://www.rane.com/note149.html

"Remember that even though the audio data is the same between AES3 and S/PDIF, they have different subcode formats. AES3 converted to 75-ohm coax is not S/PDIF, and S/PDIF converted to XLR balanced is not AES3. Nor is AES3id 75-ohm BNC the same as 75-ohm RCA S/PDIF -- it may work, but it is not the same. They are still in their native format; just the transmission medium has changed. Going from S/PDIF to AES3 has a higher degree of success than the other way around. AES3 signals often are not recognized as valid by S/PDIF inputs. Whether they will work in your application depends on the equipment chosen."

Radio Design Labs make a bunch of neat adapters. This S/PDIF/AES converter even has an optical port

http://www.rdlnet.com/product.php?page=22

real converters:

http://www.sweetwater.com/c741--Misc_Digital_Converters
http://www.murraypro.com/spdif.htm
http://www.coffeysound.com/product.php?productid=541

You can try a simple adapter (RCA to XLR) and it may work but I'd recommend a real converter.