If a DOS document is displayed incorrectly, or you see strange codes or characters in the document, try one of the following:
mYour application program may have special procedures for opening and saving documents with different file formats. See the information that came with your program, or call the program’s publisher.
mTry opening the document in another program.
Note: Some characters that can be displayed on the Macintosh are not accurately displayed on DOS computers.
For more information about working with DOS documents on your Macintosh, see the information about using DOS in Macintosh Guide, available in the Guide (h) menu.
You see a message that your application program can’t be opened because a file can’t be found.
Macintosh programs designed specifically for the PowerPC microprocessor (also called “native” applications) use special files called “shared libraries.” Any necessary shared libraries should be installed automatically when you install these special Macintosh programs.
Follow the directions that came with your program to reinstall it. If the shared library is still missing, contact the software program’s manufacturer for assistance.
You experience problems using an older Macintosh program.
Some older Macintosh programs are not completely compatible with Macintosh computers that have the PowerPC microprocessor.
mOpen the Memory control panel (in the Control Panels folder in the Apple [K] menu) and turn off Modern Memory Manager.
mIf that doesn’t work, contact the program’s publisher to see if an upgrade is available.
You’re listening through headphones, and the sound is odd.
You may have 
3D Surround Sound enabled. 3D Surround Sound doesn’t always work properly through headphones. To disable 3D Surround Sound, open the Monitors & Sound control panel, which can be found in the Apple (K) menu, and click the Sound icon. Then click the checkbox to remove the checkmark next to “Enabled.”
