diff -Naur lmms-0.3.1/plugins/ladspa_base/ladspa_manager.cpp lmms-0.3.1.tpg/plugins/ladspa_base/ladspa_manager.cpp
--- lmms-0.3.1/plugins/ladspa_base/ladspa_manager.cpp	2007-08-23 20:50:33.000000000 +0000
+++ lmms-0.3.1.tpg/plugins/ladspa_base/ladspa_manager.cpp	2007-12-26 02:59:02.000000000 +0000
@@ -63,11 +63,11 @@
 					configManager::inst()->ladspaDir() );
 #endif
 	
-	ladspaDirectories.push_back( "/usr/lib/lmms/ladspa" );
+	ladspaDirectories.push_back( "/usr/lib64/lmms/ladspa" );
 /*	// set default-directory if nothing is specified...
 	if( ladspaDirectories.isEmpty() )
 	{*/
-		ladspaDirectories.push_back( "/usr/lib/ladspa" );
+		ladspaDirectories.push_back( "/usr/lib64/ladspa" );
 		ladspaDirectories.push_back( "/usr/local/lib/ladspa" );
 //	}
 	for( QStringList::iterator it = ladspaDirectories.begin(); 
diff -Naur lmms-0.3.1/src/core/config_mgr.cpp lmms-0.3.1.tpg/src/core/config_mgr.cpp
--- lmms-0.3.1/src/core/config_mgr.cpp	2007-08-23 20:50:58.000000000 +0000
+++ lmms-0.3.1.tpg/src/core/config_mgr.cpp	2007-12-26 03:02:15.000000000 +0000
@@ -172,12 +172,12 @@
 	m_artworkDir( defaultArtworkDir() ),
 #if QT_VERSION >= 0x030200
 	m_pluginDir( qApp->applicationDirPath().section( '/', 0, -2 ) +
-							"/lib/lmms/" ),
+							"/lib64/lmms/" ),
 #else
 	// hardcode since qt < 3.2 doesn't know something like
 	// applicationDirPath and implementing own function would be senseless
 	// since real support for qt < 3.2 is senseless too ;-)
-	m_pluginDir( "/usr/lib/lmms" ),
+	m_pluginDir( "/usr/lib64/lmms" ),
 #endif
 	m_vstDir( QDir::home().absolutePath() ),
 	m_flDir( QDir::home().absolutePath() ),
@@ -918,7 +918,7 @@
 #ifdef LADSPA_SUPPORT
 	if( m_ladDir == "" )
 {
-	m_ladDir = "/usr/lib/ladspa/:/usr/local/lib/ladspa/";
+	m_ladDir = "/usr/lib/ladspa/:/usr/lib64/ladspa/:/usr/local/lib/ladspa/";
 }
 #endif