Conceptually, that's WAY easy of a thing to do if you're up to a little digital design. Here's how:
Grab a parallel ROM chip, burn it with the raw Mac sound. Hook the data outputs of the ROM straight up to the inputs of an DAC chip. Tap the DAC outputs (i.e. analog audio) to your sound card. Garb a timer and/or crystal and have yourself an 11.025 kHz wave. Run that into the clock of a counter. (you may need multiple counters) Hook the counter outputs to the address inputs of the ROM. Lastly, add some simple logic to ensure starting at address 0 and to stop counting at the end of the ROM. Extra credit to play the sound backwards after shutdown.
It's more of a project for geeks with breadboards and tinkering; don't expect to follow this advice for a quick and easy solution!
Grab a parallel ROM chip, burn it with the raw Mac sound. Hook the data outputs of the ROM straight up to the inputs of an DAC chip. Tap the DAC outputs (i.e. analog audio) to your sound card. Garb a timer and/or crystal and have yourself an 11.025 kHz wave. Run that into the clock of a counter. (you may need multiple counters) Hook the counter outputs to the address inputs of the ROM. Lastly, add some simple logic to ensure starting at address 0 and to stop counting at the end of the ROM. Extra credit to play the sound backwards after shutdown.
It's more of a project for geeks with breadboards and tinkering; don't expect to follow this advice for a quick and easy solution!