3 meters is the longest copper cable you are going to get. At least that is the longest cable that is supported according to the spec. You are going to have to get the optical ones if you want to go further but I am not sure they actually sell them yet
Thanks bro; I am a musician with my gear in a rack remote from my MAC; the current length is not reasonable for many applications; as most peripheal components are further than 10ft from the computer. Be blessed, and thank you.