I am using Camtasia Studio to match a mp3 audio to powerpoint slide show. The mp3 sounds good in Camtasia but once the ppt is imported into Camtasia it sounds tinny. This doesn't happen every time so I can't figure out why it is happening.
This sounds like a good problem to throw at our Technical Support. They can take a look at one of your camproj files with bad audio and possibly see what's going on.
You can open a ticket by clicking the "Ask a Question" tab at http://support.techsmith.com. If you've never opened a ticket before, you'll have to make a new account, but they are generally able to respond within one business day.
If you manage to get it figured out, please share the result here so others can benefit from your experience.