diff -rupN rosegarden-10.02.old/src/sound/DSSIPluginFactory.cpp rosegarden-10.02/src/sound/DSSIPluginFactory.cpp
--- rosegarden-10.02.old/src/sound/DSSIPluginFactory.cpp	2010-02-13 20:52:49.000000000 -0500
+++ rosegarden-10.02/src/sound/DSSIPluginFactory.cpp	2010-02-18 23:22:24.000000000 -0500
@@ -234,7 +234,7 @@ DSSIPluginFactory::getPluginPath()
         path = cpath;
 
     if (path == "") {
-        path = "/usr/local/lib/dssi:/usr/lib/dssi";
+        path = "/usr/local/lib64/dssi:/usr/lib64/dssi:/usr/local/lib/dssi:/usr/lib/dssi";
         char *home = getenv("HOME");
         if (home)
             path = std::string(home) + "/.dssi:" + path;
diff -rupN rosegarden-10.02.old/src/sound/LADSPAPluginFactory.cpp rosegarden-10.02/src/sound/LADSPAPluginFactory.cpp
--- rosegarden-10.02.old/src/sound/LADSPAPluginFactory.cpp	2010-02-13 20:52:49.000000000 -0500
+++ rosegarden-10.02/src/sound/LADSPAPluginFactory.cpp	2010-02-18 23:26:30.000000000 -0500
@@ -565,7 +565,7 @@ LADSPAPluginFactory::getPluginPath()
         path = cpath;
 
     if (path == "") {
-        path = "/usr/local/lib/ladspa:/usr/lib/ladspa";
+        path = "/usr/local/lib64/ladspa:/usr/lib64/ladspa:/usr/local/lib/ladspa:/usr/lib/ladspa";
         char *home = getenv("HOME");
         if (home)
             path = std::string(home) + "/.ladspa:" + path;
@@ -759,6 +759,12 @@ LADSPAPluginFactory::generateFallbackCat
             path.push_back(p);
             //	    std::cerr << "LADSPAPluginFactory::generateFallbackCategories: path element " << p << std::endl;
         }
+        else if (pluginPath[i].contains("/lib64/")) {
+            QString p(pluginPath[i]);
+            p.replace("/lib64/", "/share/");
+            path.push_back(p);
+            //	    std::cerr << "LADSPAPluginFactory::generateFallbackCategories: path element " << p << std::endl;
+        }        
         path.push_back(pluginPath[i]);
         //	std::cerr << "LADSPAPluginFactory::generateFallbackCategories: path element " << pluginPath[i] << std::endl;
     }