diff --git a/openlp/core/interpolate.py b/openlp/core/interpolate.py
deleted file mode 100644
index f2a48dd06..000000000
--- a/openlp/core/interpolate.py
+++ /dev/null
@@ -1,41 +0,0 @@
-# -*- coding: utf-8 -*-
-# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
-"""
-OpenLP - Open Source Lyrics Projection
-Copyright (c) 2008 Raoul Snyman
-Portions copyright (c) 2008 Martin Thompson, Tim Bentley
-
-This program is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free Software
-Foundation; version 2 of the License.
-
-This program is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with
-this program; if not, write to the Free Software Foundation, Inc., 59 Temple
-Place, Suite 330, Boston, MA 02111-1307 USA
-"""
-
-# useful linear interpolation routines
-
-def interp1(val1, val2, fraction):
-    """return a linear 1d interpolation between val1 and val2 by fraction
-    if fraction=0.0, returns val1
-    if fraction=1.0, returns val2"""
-    return val1+((val2-val1)*fraction)
-def interpolate(val1, val2, fraction):
-    "vals can be list/tuples - if so, will return a tuple of interpolated values for each element."
-    assert (fraction >= 0.0)
-    assert (fraction <= 1.0)
-    assert (type(val1) == type(val2))
-    if (type(val1) == type(()) or
-        type (val1) == type([])):
-        assert(len(val1) == len(val2))
-        retval=[]
-        for i in range(len(val1)):
-            retval.append(interp1(val1[i], val2[i], fraction))
-        return tuple(retval)
-    else:
-        return interp1(val1, val2, fraction)