I've downloaded Scratch to a few computers (Macs) in my Lab. On most of them, we are unable to alter the volume or use USB Headphones when playing back examples - the sound still comes out of the in-built speakers. It is working fine for all other programs and sound settings. Does it use a different sound board or something?
Thanks
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Interesting...
Try:
A differant set of headphones/speakers.
Restarting computers.
Exiting and reopening Scratch.
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try:
getting new speakers/headphones or get your com sound fixed
restarting computers
check if any parts are stuck in the speakers/headphone hole
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maybe you should try plugging and unplugging the headphones in...
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