Where to buy opamps

I want to upgrade my music hall cd player,I have read the opamp upgrade is easy,just a plug in upgrade,anybody have an idea where I could buy the parts I need?

http://www.soundodyssey.com/AudioParts/OPA627.html

http://www.upscaleaudio.com/search.a...ord=burr+brown

www.mouser.com they have a huge catalog of electronics fast shipping too.