You do realize that if you have a reasonable signal (20 db SNR or higher), there is absolutely no need for DSDTune. In many cases you can even have lower than 20 db SNR and still get a great decode. If you aren't getting a good decode, you need to explore why -- too much gain, too little gain, interference, wrong settings in FMP* / DSDPlus, SDR#, SDRUno, etc.
DSDtune hasn't even been updated in 6+ years.