1) wav2cas converts the wave file but if you look at the produced "hex" file you can see some "bad" blocks.
All bad blocks seem to be empty blocks as mostly zeros are included. Is this a problem of wav2cas ? Maybe these blocks have non-standard size, which are not handled by wav2cas ?
2) the game doesn't load with fastsio on in Atariwin 4.0

BUT it loads when fastSIO is de-activated ! Well, it takes some time but it's working !
Is this a "problem" of AtariWin or won't "Spy vs Spy 3" load with fast SIO patch, I mean : does the game require original OS on real Atari hardware ?
3) it's a real pain to load the game from cassette ! loading time is more than 20 minutes !

Has anybody discovered similar problems on other games ?