Car speakers suddenly stopped working, stereo seems to be working?

[Harley]

I was driving around in my car, and suddenly all subs and speakers stopped working. The sterio is still working, meaning it is playing CDs and counting through tracks, but there is just no audio. Car is 1994 Holden commodore. Please help! Thanks
Hd a guy check the fuses under the bonnet, under the dash and one in an amp and he said they were still good

Had other car troubles last week and brought a new battery today. The guy who installed it had a look to make sure that the fuses were okay, and that the easy to reach wires were okay. He didn't get into it to much, just a glance. I'm not really good with this stuff, but from what I can tell, there are to amps, one for the sub, another for the speakers.

[Anthony]

check your fuses