diff --git a/mixer/src/Mixer.C b/mixer/src/Mixer.C
index df7b498..d2a1033 100644
--- a/mixer/src/Mixer.C
+++ b/mixer/src/Mixer.C
@@ -393,7 +393,7 @@ Mixer::init_osc ( const char *osc_port )
 {
     osc_endpoint = new OSC::Endpoint();
 
-    if ( int r = osc_endpoint->init( osc_port ) )
+    if ( int r = osc_endpoint->init( LO_UDP, osc_port ) )
         return r;
 
     osc_endpoint->owner = this;
diff --git a/mixer/src/main.C b/mixer/src/main.C
index 7c65ce4..7757853 100644
--- a/mixer/src/main.C
+++ b/mixer/src/main.C
@@ -229,9 +229,9 @@ main ( int argc, char **argv )
         
         if ( nsm_url )
         {
-            if ( ! nsm->init() )
+            if ( ! nsm->init( nsm_url ) )
             {
-                nsm->announce( nsm_url, APP_NAME, ":switch:dirty:", argv[0] );
+                nsm->announce( APP_NAME, ":switch:dirty:", argv[0] );
 
                 // poll so we can keep OSC handlers running in the GUI thread and avoid extra sync
                 Fl::add_timeout( NSM_CHECK_INTERVAL, check_nsm, NULL );
diff --git a/nonlib/NSM/Client.C b/nonlib/NSM/Client.C
index 350e628..e07eba1 100644
--- a/nonlib/NSM/Client.C
+++ b/nonlib/NSM/Client.C
@@ -60,11 +60,11 @@ namespace NSM
     }
 
     void
-    Client::announce ( const char *nash_url, const char *application_name, const char *capabilities, const char *process_name )
+    Client::announce ( const char *application_name, const char *capabilities, const char *process_name )
     {
         MESSAGE( "Announcing to NSM" );
 
-        lo_address to = lo_address_new_from_url( nash_url );
+        lo_address to = lo_address_new_from_url( nsm_url );
 
         if ( ! to )
         {
@@ -151,9 +151,15 @@ namespace NSM
     }
 
     int
-    Client::init ( )
+    Client::init ( const char *nsm_url )
     {
-        _server = lo_server_new( NULL, NULL );
+        this->nsm_url = nsm_url;
+
+        lo_address addr = lo_address_new_from_url( nsm_url );
+        int proto = lo_address_get_protocol( addr );
+        lo_address_free( addr );
+
+        _server = lo_server_new_with_proto( NULL, proto, NULL );
 
         if ( ! _server )
             return -1;
@@ -169,9 +175,15 @@ namespace NSM
     }
 
     int
-    Client::init_thread ( )
+    Client::init_thread ( const char *nsm_url )
     {
-        _st = lo_server_thread_new( NULL, NULL );
+        this->nsm_url = nsm_url;
+
+        lo_address addr = lo_address_new_from_url( nsm_url );
+        int proto = lo_address_get_protocol( addr );
+        lo_address_free( addr );
+        
+        _st = lo_server_thread_new_with_proto( NULL, proto, NULL );
         _server = lo_server_thread_get_server( _st );
         
         if ( ! _server || ! _st )
diff --git a/nonlib/NSM/Client.H b/nonlib/NSM/Client.H
index 7e211c5..92bbfe7 100644
--- a/nonlib/NSM/Client.H
+++ b/nonlib/NSM/Client.H
@@ -29,6 +29,8 @@ namespace NSM
 
     private:
 
+        const char *nsm_url;
+
         lo_server _server;
         lo_server_thread _st;
         lo_address nsm_addr;
@@ -64,14 +66,14 @@ namespace NSM
         void is_clean ( void );
         void progress ( float f );
         void message( int priority, const char *msg );
-        void announce ( const char *nsm_url, const char *appliction_name, const char *capabilities, const char *process_name );
+        void announce ( const char *appliction_name, const char *capabilities, const char *process_name );
 
         void broadcast ( lo_message msg );
 
         /* init without threading */
-        int init ( void );
+        int init ( const char *nsm_url );
         /* init with threading */
-        int init_thread ( void );
+        int init_thread ( const char *nsm_url );
         
         /* call this periodically to check for new messages */
         void check ( int timeout = 0 );
diff --git a/nonlib/OSC/Endpoint.C b/nonlib/OSC/Endpoint.C
index 1bfdfe7..6d49e22 100644
--- a/nonlib/OSC/Endpoint.C
+++ b/nonlib/OSC/Endpoint.C
@@ -87,11 +87,11 @@ namespace OSC
     }
 
     int
-    Endpoint::init ( const char *port )
+    Endpoint::init ( int proto, const char *port )
     {
         DMESSAGE( "Creating OSC server" );
 
-        _server = lo_server_new( port, error_handler );
+        _server = lo_server_new_with_proto( port, proto, error_handler );
 
         if ( ! _server )
         {
diff --git a/nonlib/OSC/Endpoint.H b/nonlib/OSC/Endpoint.H
index 42a10b9..3881158 100644
--- a/nonlib/OSC/Endpoint.H
+++ b/nonlib/OSC/Endpoint.H
@@ -270,7 +270,7 @@ namespace OSC
 
         void list_peers ( void (*callback) (const char *, const char *, int, void * ), void *v );
 
-        int init ( const char *port = 0 );
+        int init ( int proto, const char *port = 0 );
         Endpoint ( );
 
         ~Endpoint ( );
diff --git a/session/src/nsmd.C b/session/src/nsmd.C
index 8870bda..2cd35e8 100644
--- a/session/src/nsmd.C
+++ b/session/src/nsmd.C
@@ -1801,7 +1801,7 @@ int main(int argc, char *argv[])
 
     osc_server = new OSC::Endpoint();
 
-    if ( osc_server->init( osc_port ) )
+    if ( osc_server->init( LO_UDP, osc_port ) )
     {
         FATAL( "Failed to create OSC server." );
     }
diff --git a/session/src/session-manager.C b/session/src/session-manager.C
index f006ab4..04834d1 100644
--- a/session/src/session-manager.C
+++ b/session/src/session-manager.C
@@ -668,7 +668,7 @@ public:
         {
             osc = new OSC::Endpoint();
         
-            if ( int r = osc->init() )
+            if ( int r = osc->init( LO_UDP ) )
                 return r;
         
             osc->owner = this;
diff --git a/timeline/src/Timeline.C b/timeline/src/Timeline.C
index 11c5ae4..87da2d0 100644
--- a/timeline/src/Timeline.C
+++ b/timeline/src/Timeline.C
@@ -1571,7 +1571,7 @@ Timeline::init_osc ( const char *osc_port )
 {
     osc = new OSC::Endpoint();
     
-    if ( int r = osc->init( osc_port ) )
+    if ( int r = osc->init( LO_UDP, osc_port ) )
         return r;
     
     osc->owner = this;
diff --git a/timeline/src/main.C b/timeline/src/main.C
index 18a9780..455f36c 100644
--- a/timeline/src/main.C
+++ b/timeline/src/main.C
@@ -207,9 +207,9 @@ main ( int argc, char **argv )
 
         if ( nsm_url )
         {
-            if ( ! nsm->init() );
+            if ( ! nsm->init( nsm_url ) );
             {
-                nsm->announce( nsm_url, APP_NAME, ":progress:switch:", argv[0] );
+                nsm->announce( APP_NAME, ":progress:switch:", argv[0] );
 
                 /* poll so we can keep OSC handlers running in the GUI thread and avoid extra sync */
                 Fl::add_timeout( NSM_CHECK_INTERVAL, check_nsm, NULL );