>As long as you're running the VFP app under Windows OS it wouldn't be a problem, so it's OK if:
>* If you run under Windows OS installed on a Macintosh.
>* If you run under VM running Windows OS.
>
>Running with Wine or WineLib on Unix/Linux would violate the EULA however.


Depend on VFP features used, he might be able to downgrade (Recompile) app to VFP6 fro this particular client only.
EULA ambush was introduced later (7 or 8) so VFP6 executables should be legal on WINE/LINUX.