Name:         Streaming Audio Update
Version:      1.0b2
Released:     June 25, 1997
Requires:
A 52xx/53xx/62xx/63xx series (except 6360) Mac OS computer
running Mac OS 7.6.1, 7.6, or 7.5.5
Description:
Improves streaming audio performance. For complete
information, please see the Read Me included with this
software.

This software consists of a Disk Copy compressed image,
which requires Disk Copy 6.1 or later to use. Download this
software to your hard drive and then double-click it to use
it. Disk Copy is available in the Utilities folder.

From the Read Me included with this software:

Important information about the 7.6.1 Streaming Audio Update
extension, beta release.

This document provides information about the 7.6.1 Streaming
Audio Update extension version 1.0b2.  This extension has
not been fully qualified, and it is considered
'unsupported'. It may be used at your own risk. Apple
Computer, Inc. cannot provide support for this extension by
telephone, fax or email.

The 7.6.1 Streaming Audio Update extension alleviates one
cause of poor performance when using internet streaming
media applications on certain Macintosh computers.  Internet
streaming media can also be adversely affected by poor
connections or poor latency to a server.

The 7.6.1 Streaming Audio Update extension can be installed
on Mac OS 7.6.1, 7.6, or 7.5.5.  The extension will not load
on earlier system releases.  The streaming audio improvement
delivered in this extension will be included in future
releases of Mac OS, and the extension will not load on
releases after 7.6.1.

This extension addresses one problem specific to the
following Apple products:

Power Macintosh 5200
Power Macintosh 5260
Power Macintosh 5300
Macintosh Performa 5200CD
Macintosh Performa 5210CD
Macintosh Performa 5215CD
Macintosh Performa 5220CD
Macintosh Performa 5260CD
Macintosh Performa 5260/120
Macintosh Performa 5270CD
Macintosh Performa 5280
Macintosh Performa 5300CD
Macintosh Performa 5320CD

Power Macintosh 6200
Power Macintosh 6300
Macintosh Performa 6200CD
Macintosh Performa 6205CD
Macintosh Performa 6210CD
Macintosh Performa 6214CD
Macintosh Performa 6216CD
Macintosh Performa 6218CD
Macintosh Performa 6220CD
Macintosh Performa 6230CD
Macintosh Performa 6260CD
Macintosh Performa 6290CD
Macintosh Performa 6300CD
Macintosh Performa 6310CD
Macintosh Performa 6320CD


How to Install the 7.6.1 Streaming Audio Update extension

To install the 7.6.1 Streaming Audio Update extension follow
these steps:

1. Locate the System Folder on the computer's hard disk.
Don't open the System Folder.

2. Drag the file named "7.6.1 Streaming Audio Update" to the
System Folder.

3. A message appears asking if you want to put the "7.6.1
Streaming Audio Update" into the Extensions folder. Click
OK. If a second message appears stating that "7.6.1
Streaming Audio Update" already exists and asks you if you
would like to replace it, click OK.

4. Open the Special menu and choose Restart.


Technical Details

Poor streaming audio performance can occur from slow
internet connections, slow servers, or while the computer is
engaged in other work concurrently.  On some specific
revisions of the listed computer models, an additional cause
of poor streaming audio performance was an interaction with
the serial driver software, sound driver software, and
serial hardware.

The 7.6.1 Streaming Audio Update extension changes the
behavior of the serial and sound driver software to better
support the demanding, real time nature of streaming audio. 
At times when the sound driver is busy servicing the sound
hardware, extra checks are made to ensure that the serial
driver can properly service the serial hardware.  For some
computers this results in a significant improvement in
streaming audio performance.


June 12th, 1997

Copyright 1997  Apple Computer. Inc. Apple, the Apple logo,
Macintosh, Mac OS, Performa, and Power Macintosh are
trademarks of Apple Computer, Inc., registered in the U.S.
and other countries. All other product names are trademarks
or registered trademarks of their respective holders.
Mention of non-Apple products is for informational purposes
and constitutes neither an endorsement nor a recommendation.
Apple assumes no responsibility with regard to the
selection, performance, or use of these products.
