Use a different FOURCC for Speex from RTP (refs #1291),

as it needs some specific processing in the decoder.
Patch from William Hawkins

modules/demux/live555.cpp

@@ -39,6 +39,7 @@
 #   include <winsock2.h>
 #endif
 
+#include "UsageEnvironment.hh"
 #include "BasicUsageEnvironment.hh"
 #include "GroupsockHelper.hh"
 #include "liveMedia.hh"
@@ -743,7 +744,14 @@ static int SessionsSetup( demux_t *p_demux )
                 }
                 else if( !strcmp( sub->codecName(), "SPEEX" ) )
                 {
-                    tk->fmt.i_codec = VLC_FOURCC( 's', 'p', 'x', ' ' );
+                    tk->fmt.i_codec = VLC_FOURCC( 's', 'p', 'x', 'r' );
+		    if ( sub->rtpTimestampFrequency() )
+		        tk->fmt.audio.i_rate = sub->rtpTimestampFrequency();
+                    else
+		    {
+		        msg_Warn( p_demux,"Using 8kHz as default sample rate." );
+			tk->fmt.audio.i_rate = 8000;
+		    }
                 }
             }
             else if( !strcmp( sub->mediumName(), "video" ) )