I made a new WAV player using the noise shaping technique described here:
Can it be done? Seems like it could.
MS-DOS source code is available. There are some other DOS versions out there too...
I have played a bit with the code and got it to run on the Pipistrello board. More testing needs to be done but it least it runs
After total frustration in getting things done really fast in Spin, which I'm not very good at, I have decided to learn Assembly Language for the Propeller