Macbook pro, sound issue

I remember using audio Hijack

culprit that probably changed your settings. Go into the Utilities folder & check your output settings in the Audio Midi app - http://docs.info.apple.com/article.html?artnum=300832



Open up GarageBand if installed. Open a program.
Quit out of the GarageBand app.



Trash the com.apple.systemsound.plist file and restart your computer.

Apparently Snow Leopard is slightly different than the Tiger OS regarding plist files & the Midi app.
If the com.apple.systemsound.plist file is inside your Home/Library/Preferences folder, it is ok to trash this file and restart your computer. The plist file will be recreated.

As far as the Midi app in Tiger, I believe it looks something like this
!http://www.lexiconpro.com/images/misc/omegaAMsetup.JPG!
Make sure your *Audio Output* setting has the same Format as the one in the picture - _44100.0 Hz._



Have you tried the Garage Band solution?

Hmmmmm, that GB trick the privious poster mentioned usually works for problems like yours. Strange!



Under Tiger it's the com.apple.soundpref.plist file you should be looking for. It's found in.........



Home>Library>Preferences> com.apple.soundpref.plist



Below is my Midi app which is a little different from the default settings because I have external speakers hooked up to my comp. Compare yours to mine to find out if any of your settings have changed:
!http://i46.tinypic.com/2na1nwj.png!
Change the Audio Input & Output Format to *44100.0 Hz 2ch-16bit*



*Last resort..........*
*Disconnect all devices fro*m your computer. Uninstall Audio Hijack. If it comes w/a uninstaller strongly urge you to use it. If not, use one of these utilities:
AppDelete (free)



AppZapper (shareware)
These utilities basically do all the work for you by not only trashing the apps but the apps preference files, caches & all its associated files scattered throughout the system.



Boot up from your install DVD and run *"Repair Disc"* from the Utility menu.
After booting back to your desktop, repair permissions & restart your computer.





!http://i50.tinypic.com/izvwo1.gif!

Installing leopard would help this situation?

No. You should not upgrade over an os you are having issues with.



Did you uninstall Hijack?



Set up a new account. Do you have sound? If you do, we will know your issue is not system wide.

no startup bong either..

Not a good sign. Disconnect all peripherals and the power cord, remove the battery. Take a deep breath & count to 60 slowly. Reconnect the power cord and battery and see if the machine starts normally. If it does, you can start connecting all peripherals one at a time.

If this tactic does not work, disconnect the power cord and hold down the Power button for 5 seconds, then reconnect the power adapter and press the Power Button to turn on the computer.
If that does not work, time to call AppleCare if you have it. If you don't, go to an Apple Store. The staff there will run a few diagnostic tests to determine if you are having hardware issues.

Message was edited by: CMCSK

When you say you uninstalled the Audio Hijack program, what exactly did you do? Just trashing the app itself won't clear all of the components the original installer may have left. Perhaps there are other files floating around in your Home->Library folder that could be affecting your sound. Some installer programs also contain an unistall feature...if so, you should use that to make sure everything's removed.

Also, did you reset your PRAM? You said "nram" but I wasn't sure what you meant. Restart and hold down the Command-Option-P-R keys until you hear at least two start up chimes.

Hope this helps to save you a trip to the store 😟

-Karen-