Mrs M9 got me a set of the new DC X11's for Xmas, complete with an auto-muting MP3/Mobile phone/whatever input (yes I know its not Xmas yet and I shouldn't have my pressies yet but I stopped believing in Santa some time ago
)
1st time I'd listened to music in my a/c, and I have to say its bl**dy annoying when interrupted by some poor stude (presumably) stammering over his RT and ATC repeatedly asking what service he reqd (felt like interjecting he wants a FIS FFS!). (PS this is not a dig at either the stude nor ATC BTW)
Anyway, to cut a long story short, found the frequent interruptions completely spoiled the music, haven't bothered since.