[Coco] Cassette Program Loading Help Needed

[RETRO Innovations]

Interestingly, I removed my device from the equation, and wired the 
Coco3 to my sound card.

Interestingly, I cannot get the Coco 3 to load a file that it saved.  I 
can get it to load a file that the Coco 1 saved, but not the Coco3
The Coco1 can load the Coco1 file as well, but not the Coco3 file

I have the various files saved in WAV format.  Anyone interested in 
trying them on their Coco 3?

I played with microphone levels and audio output levels, to no avail.

Jim