I have created a C program for converting wav and mp3 files to hex files suitable for loading to the Replica I using the serial interface.
I have tested with the lunar.wav and basic.wav files posted in this thread: http://www.applefritter.com/node/9848.
The resulting lunar.txt is identical to the one downloaded from this site.
I have also used basic.mp3 from:
The resulting basic.txt is identical, except two bytes to the basic.txt generated from the wav file from thread above.
I would like to do some more testing of the program. So if anyone have some more wavs or mp3s of Apple I casette software I could try out it would be great.
When I get to the point where the program works somewhat reliable I will post the source and the resulting files.