diff --git a/AO2XP.py b/AO2XP.py
index a5b1558..306cc4f 100644
--- a/AO2XP.py
+++ b/AO2XP.py
@@ -5,9 +5,7 @@ app = QtGui.QApplication(sys.argv)
 
 osname = platform.system()
 bassdll = "bass.dll"
-if osname == "Darwin":
-    bassdll = "libbass.dylib"
-elif osname == "Linux":
+if osname != "Windows":
     bassdll = "libbass.so"
 
 debugmode = len(sys.argv) > 1 and sys.argv[1] == "debug"
diff --git a/quicksetup.py b/quicksetup.py
index 26cd172..dc19497 100644
--- a/quicksetup.py
+++ b/quicksetup.py
@@ -70,6 +70,10 @@ zip_ref = zipfile.ZipFile(BASSOPUSZIP, 'r')
 zip_ref.extract(BASSOPUSDLL)
 zip_ref.close()
 
+if platform.system() == "Darwin":
+    os.rename(BASSDLL, "libbass.so")
+    os.rename(BASSOPUSDLL, "libbassopus.so")
+
 print "installing apng"
 pip_install("apng")