OK, so all of a sudden my Flash player had no sound… Was it the latest Mac software update? The latest Flash player update? My web browser? My computer about to die? I HATE these kind of problems! I did some searching around and found an answer here:
This may help you PC users out there as well. Basically you can skip reading all the threads above, here is the solution:
In the Applications > Utilities folder open the Audio MIDI setup. Find the audio output settings and change it from 96khz to 44khz or 48khz. Viola!!! This fixes the problem. Yay!