I really should be kicking myself -- when I was married (yes, really), my wife was very understanding despite not understanding -- she was completely tolerant of my activities (within reason, financially), even though she could care less about sound. Hell, she got me my first pair of decent headphones. The only time she cared was when I spent too much on something, but it was only that -- she didn't try to control what I spent it on, just how much, and only for the reasonable reasons.