Whoa, very cool mum *Mom* you have there! At least when you're skint but want a cd desperately, your mum can always buy it because she has the same taste =)
My own mum HATES my music. Well most of it. I don't think she minds the quieter ones. When I first got Collision Course, I put it on the the living room with the sub-woofers and stuff, and she told watched it for about a minute and then told me to turn it off >.< Also she comes into my room when I'm playing LP loudish and tells me to turn it off. It's just "noise" haha. Oh well, bless em =D