2 questions please =]

1.) when i connect it to the pc with the left and right output it works perfectly fine through the speakers but when its late at night like now *22:47* i'd rather not wake others sleeping so i put in my USB headset however the sound stops and i can hear nothing playing.. any suggestions ?

2.) I change my settings over and over turn reverb off, take the effects off however i always seem to have a tone that sounds very reverb'd in a church or something, anyone got any settings for metal that could sound clean and not reverb'd

i only really require the answer to question 1 but question 2 would be a nice help


- Djay