That looks like the linker can't find the libbass.dylib file. Is where you have it now working when you target x86_64 instead of arm64? If so, perhaps Delphi has a separate library search path setting for arm64? Also check you haven't removed the arm64 architecture from the libbass.dylib file, eg. using the makefile in the BASS package. If you have, you can re-download to get the full version.