I found a cheap toslink cable ($6.99 for 3 feet) from Startech.com that fits the Hugo and I have confirmed that it plays to 192 KHz:
http://www.startech.com/Cables/Audio-Video/Toslink/3-ft-Toslink-to-Mini-Digital-Optical-SPDIF-Audio-Cable~THINTOSMIN3
They have 3 feet, 6 feet, and 10 feet lengths too!
http://www.startech.com/Cables/Audio-Video/Toslink/3-ft-Toslink-to-Mini-Digital-Optical-SPDIF-Audio-Cable~THINTOSMIN3
They have 3 feet, 6 feet, and 10 feet lengths too!