diff -ruN xmms-crossfade-0.3.12-audplugin3/crossfade.c xmms-crossfade-0.3.12-audplugin4/crossfade.c
--- xmms-crossfade-0.3.12-audplugin3/crossfade.c	2007-09-30 14:05:16.000000000 +0200
+++ xmms-crossfade-0.3.12-audplugin4/crossfade.c	2007-09-30 14:06:47.000000000 +0200
@@ -585,7 +585,11 @@
 	if (!config->op_name)              config->op_name              = g_strdup(DEFAULT_OP_NAME);
 
 	/* check for realtime priority, it needs some special attention */
+#if __AUDACIOUS_PLUGIN_API__ <= 3	
 	realtime = xmms_check_realtime_priority();
+#else
+	realtime = FALSE;
+#endif
 
 	/* show monitor win if enabled in config */
 	xfade_check_monitor_win();
diff -ruN xmms-crossfade-0.3.12-audplugin3/crossfade.h xmms-crossfade-0.3.12-audplugin4/crossfade.h
--- xmms-crossfade-0.3.12-audplugin3/crossfade.h	2007-09-30 14:05:12.000000000 +0200
+++ xmms-crossfade-0.3.12-audplugin4/crossfade.h	2007-09-30 14:09:32.000000000 +0200
@@ -142,6 +142,10 @@
 #define DEFAULT_OP_NAME              "libALSA.so"
 #define DEFAULT_EP_NAME              "libnormvol.so"
 
+#if __AUDACIOUS_PLUGIN_API__ >= 3
+#define xmms_usleep g_usleep
+#endif
+
 #define DEFAULT_OP_CONFIG			\
 { FALSE, FALSE, 2304, FALSE }
 
diff -ruN xmms-crossfade-0.3.12-audplugin3/oss.c xmms-crossfade-0.3.12-audplugin4/oss.c
--- xmms-crossfade-0.3.12-audplugin3/oss.c	2007-09-30 14:05:16.000000000 +0200
+++ xmms-crossfade-0.3.12-audplugin4/oss.c	2007-09-30 14:07:38.000000000 +0200
@@ -267,7 +267,11 @@
 		dsp_fragment = config->oss_fragments << 16 | config->oss_fragment_size;
 
 	/* check for realtime priority, it needs some special attention */
+#if __AUDACIOUS_PLUGIN_API__ <= 3
 	realtime = xmms_check_realtime_priority();
+#else
+	realtime = FALSE;
+#endif
 
 	DEBUG(("[xfade-oss] open_audio: fmt=%s rate=%d nch=%d\n", format_name(fmt), rate, nch));