Glumpy doens't have Freetype preinstalled. The folder you see there is actually an API to bind the original Freetype into the module.
If you open the file "main.py" located in this folder you will see something like this:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# -------------------------------------------------------------------
----------
#
# FreeType high-level python API - Copyright 2011 Nicolas P. Rougier
# Distributed under the terms of the new BSD license.
#
# -------------------------------------------------------------------
----------
'''
FreeType high-level python API
This the bindings for the high-level API of FreeType (that must be
installed
somewhere on your system).
Note:
C Library will be searched using the ctypes.util.find_library.
However,
this
search might fail. In such a case (or for other reasons), you can
specify
the
FT_library_filename before importing the freetype library and
freetype will
use
the specified one.
'''
Therefore, as the note says crearly, Glumpy tried to find this packages but failed. So you have to find it manually in this file by adding the path string where your FreeType.dll file is located.
1- Install Freetype with pip.
2- In line 49 add the path to your .dll file.
3- Comment the error handler "raise RuntimeError('Freetype library not found')".
That should fix the problem.