Why can't I change Video SlingPlayer Preferences in SlingPlayer for Mac

While you're watching your Slingbox via the SlingPlayer for the Macintosh you can't change any of the Video settings. They're grayed-out.

To make changes to these preferences:

1. Click the Cancel button,
2. Go to the Slingbox menu and select Disconnect Slingbox.
3. Go back to Video preferences.

You'll be able to make changes.