Thanks for your patience and you help.
I have totally missed the Wavprg program.
I recorded my old tapes to WAV using Audacity, and then converted them to TAP using Audiotap.exe.
I then used FinalTap to "clean" the TAP files into another TAP file.
Last i wrote the cleaned TAP files to new casettes, again using Audiotap.exe.
I tried the new casette in my physical C64, and it works with the turbo itself, but Giana Sister failed to load. I recorded the new casette to Wav File again, just to "see" it.
After your response above I looked at wavprg.exe (yes, it was in the guide, but I did not understand...).
I have a third casette, and used waveprg to write your PRG files (turbo.prg and giana.prg).
The third casette did not load at all in my physical c64.
Here is a better image of all my tries:
1. My original tape, at least 25 years old. (Works!)
2. My TAP files, written using Audiotap.exe. (The turbo works, but not Giana)
3. Your PRG files, written using Wavprg.exe. (Neither the turbo or Giana works).
I am kind of obsessed with the idea to make a digital restored version of my own old tapes, thats why i keep going back to my own Wav files.
