Hi …
If you are asking if WL has a built in DRM tool-set, the answer is not to my knowledge.
DRMs tend to be ‘proprietary’ in nature. I would have thought that the client would need to have a license for a specific DRM … and provide you with the relevant toolkit which may, or may not, allow you to enter the restriction within WL.
Of course, the client would need to be careful not to upload a DRM embedded wav file to aggregators for distribution as that would be asking for trouble (likely to be bounced).