[Coco] Tape emulation

[Michael Brant]

I know we can use various media players to play tape audio to be read by
the CoCo.
In my original CoCo days I never used the tape functions.  When not using
real tapes how are people saving files using what the cooc thinks is a tape
but using modern hardware?
My main reason is for saving data while using program paks that don't allow
for use of a disk drive via an MPI.