It should be possible to process WAV audio (*.wav, *.wave) and convert to Delusion/XTracker audio samples (*.dsf) with some of the professional audio editing and mixing software like KORG AudioGate.
Convert WAVe PCM Sound, standard Windows sound format to Delusion/XTracker digital sample.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert wav to dsf on Windows
An audio player and converter
Convert from wav file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.