MagicPrefs sembra l'unica soluzione attualmente disponibile per abilitare un terzo pulsante su un Magic Mouse.
Dal loro sito web:
MagicPrefs is a free application for OS X which aims to improve the
functionality and configuration options of the Apple Magic Mouse,
Magic Trackpad and the MacBook glass trackpad.
It features the ability to bind a variable number of finger clicks,
taps, swipes, pinch and other gestures to functions like Middle Click,
Hold Down Both Mouse Buttons, Spaces, Expose, Dashboard, Recent
Applications, Tweet, Read Tweets, Google Reader etc.