Ever since the invention of the first stereo – or whatever it was called back then – some people have displayed an almost tyrannical need to impose their musical taste on others, regardless of whether or not the audience shares their enthusiasm. We’ve all seen them over the years: the bloke who cranks up the volume and opens every window in his car as he pulls up at traffic lights; the person (again, usually a man) with a small fortune to spend on the pub jukebox or the house party guest who hijacks the CD player. Add to this list the seemingly growing army of self-appointed DJs who now like t…