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QuickTime allows you to play back audio and video on your computer. 

Requirements
QuickTime 6.5.1 requires Mac OS X version 10.2.6 or higher.  

Make sure you have the latest update of Mac OS X. Get the latest update by choosing Apple menu > System Preferences, then clicking Software Update, and then Update Now or Check Now. After you install an update, it's a good idea to click Update Now or Check Now again to make sure you've gotten all the latest versions. 

What's new in QuickTime 6.5.1
QuickTime 6.5.1 delivers many important updates, including:
•  Apple Lossless Encoder, a new lossless audio codec that retains the full quality of uncompressed CD audio while requiring only about half the storage space.
•  Significant improvements to AAC encoding, resulting in high-quality sound over a full range of audio frequencies.
•  Enhanced support for iTunes and other QuickTime-based applications.

What's new in QuickTime 6
QuickTime 6 includes these features:
•  Create and play back industry-standard, high-quality, interoperable MPEG-4 audio and video content.
•  Create and play back industry-standard mobile multimedia (3GPP and 3GPP2) content.
•  Experience Instant On streaming, providing immediate access to media with no buffer delays.  Combined with Skip protection, Apple's patent-pending technology for minimizing interruptions or skips in streaming media, you'll get a reliable, high-quality connection.
•  Purchase the MPEG-2 Playback Component to add MPEG-2 playback support to QuickTime (available at store.apple.com).

For more information
For more information about using QuickTime, open QuickTime and choose Help > QuickTime Player Help. 
To find the latest in QuickTime content, visit www.apple.com/quicktime.  Or, click on ¨ in the player to access the QuickTime content guide.

To access technical support, visit www.apple.com/support and choose QuickTime.

A note about copyright
This software may be used to reproduce materials. It is licensed to you only for reproduction of non-copyrighted materials, materials in which you own the copyright, or materials you are authorized or legally permitted to reproduce. If you are uncertain about your right to copy any material, contact your legal advisor.

About Roland's Sound Set for General MIDI and GS Format
This release of QuickTime includes an instrument sound set licensed from Roland Corporation that makes a complete General MIDI compatible sound set.  It also includes additional sounds necessary to make a complete GS Format compatible sound set.

What is the GS Format?
The GS Format is a standardized set of specifications for sound sources that defines the manner in which multitimbral sound generating devices will respond to the MIDI messages.  The GS Format complies with the General MIDI System Level - 1. The GS Format also defines a number of other details over and above the features of General MIDI.  These include unique specifications for sound and functions available for tone editing, effects, and other specifications concerning the manner in which sound sources will respond to MIDI messages.  Any device that is equipped with GS Format sound sources can faithfully reproduce both General MIDI sound recordings and GS Format MIDI sound recordings.

How to contact Roland:
Roland Corporation
4-16, Dojimahama 1-chome,
Kita-ku, Osaka 530-0004, Japan

For more information about Roland and its line of products, visit their website at http://www.roland.co.jp.

Limitations
Roland reserves all rights to the Sound Set not expressly granted by Roland Corporation U.S. or by Apple under the terms of Apple's Software Distribution Agreement.

©1991-2004 Apple Computer, Inc. 
Apple, the Apple logo, Macintosh, and Power Macintosh are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. QuickTime, QuickTime Player, and PictureViewer are trademarks of Apple Computer, Inc. All other trademarks are the property of their respective owners.