Does Guitar Link UCG102 really have stereo output? I've already tried to connect two different headphones to the UCG102's headphone output, but I can get only sound from the left earphone (mono). Also I've tried with speakers, but I got the same result (sound from left speaker only). Am I missing any config, or does my UCG102 have a hardware probem? [Environment] Windows XP home SP3 Asio4all 2.7 Behringer USB driver installed Guitar Rig 4