The dll needs to be in the path.
Options for making the import lib (taglib.a) locatable include:
1) placing it in C:/strawberry/c/lib
2) setting the LIBRARY_PATH environment variable to its location (set LIBRARY_PATH=C:\wherever\it\is).
Similarly, if there are taglib headers that need to be found you can:
1) place them in C:/strawberry/c/include
2) set the CPATH environment variable to their location (set CPATH=C:\wherever\they\are).
Not sure if the "LIBRARY_PATH" approach will work on your strawberry. It depends upon which version of ExtUtils::MakeMaker you have. The "CPATH" solution should work fine on all versions of strawberry.