On: 78rpm Records Digitized

[WalterBright]

They can be recorded as a .WAV file at 33 rpm, which is then easy to write a program to speed up to 78.

[reaperducer → WalterBright]

It's my understanding that it's more than just the speed. 78's will destroy the needle of a regular record player because they're made of very hard shellac, and not vinyl.

[samstave → reaperducer]

Yep - they are very dense, heavy and brittle.