The only pds to wav conversion that would make sense is an export of .pds projects from Cyberlink PowerDirector and export the audio data as WAVE files. However, that would probably require all the multimedia data that are referenced by the projects.
Convert Cyberlink PowerDirector project to WAVe PCM Sound, standard Windows sound format.
We found one software available in the database for this conversion.
Microsoft Windows software - convert pds to wav on Windows
Suite of tools for video editing
Convert from pds 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.