Hard News: Copywrong

Right now I pay $ for a CD and can play it on pretty much anything I like. The reduced price for downloaded music is supposed to recognise a considerably lower distribution cost, not fewer rights.

It seems to me that all this discussion will go unnoticed by the powers that be and we can't have that. I'm new to this site so I may be sugessting something obvious and already underway but I wonder if we can't get an online petition happening. I got an email a few months back which I can't find but it was an online petition to be sent to an MP. Does any one know how / where to start one?