apple-m "mute region" clash with finder apple-m "minimize"

[wez]

i've recently upgraded to protools 7.3 on OSX 10.4. it's all good, except this is really bugging me... i can't use apple (command)-M to mute individual regions anymore, because of course it is used by the system to minimize the window. i'm guessing i might have to get my hands dirty and dive into terminal to disable it, so any advice or alternatives would be warmly welcomed.

i'm also a bit worried that i can't find anyone else here with the same problem...

anyway, it's a shortcut i use literally hundreds of times a day when i'm editing, so i really really want to be able to use it again. i'm pretty sure i can't change it in protools, and i've had no joy with the mac fora.

cheers, and thanks,

wez