Controlling Sapphire Browser
On the AppleTV:
With beta 4 we have changed the way the Apple Remote interacts with Sapphire. Specifically the left and right arrow buttons now have dedicated tasks while using the browser.

In Leopard:
The Apple remote will respond exactly the same as it does for the AppleTV (See above). In addition to the remote, you can use the keyboard to control Sapphire with the following keys:
To Select, Play or Pause use:
Return -or- Space Bar
To go back (same as hitting the menu button on the remote):
ESC
Toggle View:
Left Arrow ( <– )
Mark Menu:
Right Arrow ( –> )
Move Selector UP:
UP Arrow
Move Selector DOWN:
DOWN Arrow