Install the following........
RealPlayer
Flip4Mac
VLC Media Player
Perian (AVI and FLV support)
Adobe Flash Player Software
After the installation, repair permissions and restart your computer.
In case you need instructions:
Save and/or quit your applications & doucuments
Go to Applications>Utilities Folder
Click Disk Utility
Click the Volumn (HD) that you want to check.
Click the Repair Disk Permissions button. (Don't worry about verifying)
At the bottom of window when the repairs have finished, you will see the “most important thing”:
Permission Repairs Complete
The previliges have been repaired or completed on the selected volumn.
Restart your computer.
http://docs.info.apple.com/article.html?artnum=25751 *About Disk Utility's Repair Disk Permissions feature*
**Same directions are also in the OS Mac Help Menu.**
