Apple today released DVD Player 4.6 which delivers added support for DVD Studio Pro 4 authored HD DVDs. It is recommended for all users of DVD Player.
Key Updates include:
-Additional support for playing DSP 4 authored HD DVD folders from DVD discs and hard drives.
-Additional support of discs with both SD and DSP 4 authored HD content.
-Improved Global Player settings.
-Improved usage for last play and disc info dialogs.
System Requirements:
-Mac OS X 10.4 or later
-A Macintosh computer with a PowerPC G3, G4 or G5 processor (G5 required for HD playback)
-256 MB of RAM
More info and download (8.6MB) link here.