Index: main/plugin-multimedia/i18n/messages_en.xml
===================================================================
--- main/plugin-multimedia/i18n/messages_en.xml	(revision 34856)
+++ main/plugin-multimedia/i18n/messages_en.xml	(working copy)
@@ -98,7 +98,7 @@
 	<message key="CONTENT_MULTIMEDIA_GALLERY_FULL_SCREEN">Full screen mode</message>
 	<message key="CONTENT_MULTIMEDIA_GALLERY_MUTE">Mute</message>
 	<message key="CONTENT_MULTIMEDIA_GALLERY_PLAY">Start</message>
-	<message key="CONTENT_MULTIMEDIA_GALLERY_UPDATE_FLASH">You need to upgrade your version of Flash.</message>
+	<message key="CONTENT_MULTIMEDIA_GALLERY_UPDATE_FLASH">You need to install, activate or upgrade Flash player.</message>
 	
 	<!-- +
 	     | AUDIO GALLERY
@@ -133,5 +133,5 @@
 	<message key="CONTENT_AUDIO_GALLERY_FULL_SCREEN">Full screen mode</message>
 	<message key="CONTENT_AUDIO_GALLERY_MUTE">Mute</message>
 	<message key="CONTENT_AUDIO_GALLERY_PLAY">Start</message>
-	<message key="CONTENT_AUDIO_GALLERY_UPDATE_FLASH">You need to upgrade your version of Flash.</message>
+	<message key="CONTENT_AUDIO_GALLERY_UPDATE_FLASH">You need to install, activate or upgrade Flash player.</message>
 </catalogue>
\ No newline at end of file
Index: main/plugin-multimedia/i18n/messages_fr.xml
===================================================================
--- main/plugin-multimedia/i18n/messages_fr.xml	(revision 34856)
+++ main/plugin-multimedia/i18n/messages_fr.xml	(working copy)
@@ -97,7 +97,7 @@
 	<message key="CONTENT_MULTIMEDIA_GALLERY_FULL_SCREEN">Mode plein ecran</message>
 	<message key="CONTENT_MULTIMEDIA_GALLERY_MUTE">Muet</message>
 	<message key="CONTENT_MULTIMEDIA_GALLERY_PLAY">Démarrer</message>
-	<message key="CONTENT_MULTIMEDIA_GALLERY_UPDATE_FLASH">Vous devez mettre à jour votre version de Flash</message>
+	<message key="CONTENT_MULTIMEDIA_GALLERY_UPDATE_FLASH">Vous devez installer, activer ou mettre à jour votre lecteur Flash.</message>
 	
 	<!-- +
 	     | AUDIO GALLERY
@@ -131,5 +131,5 @@
 	<message key="CONTENT_AUDIO_GALLERY_FULL_SCREEN">Mode plein ecran</message>
 	<message key="CONTENT_AUDIO_GALLERY_MUTE">Muet</message>
 	<message key="CONTENT_AUDIO_GALLERY_PLAY">Démarrer</message>
-	<message key="CONTENT_AUDIO_GALLERY_UPDATE_FLASH">Vous devez mettre à jour votre version de Flash</message>
+	<message key="CONTENT_AUDIO_GALLERY_UPDATE_FLASH">Vous devez installer, activer ou mettre à jour votre lecteur Flash.</message>
 </catalogue>
\ No newline at end of file
Index: main/plugin-multimedia/stylesheets/content/audioGallery/audioGallery.xsl
===================================================================
--- main/plugin-multimedia/stylesheets/content/audioGallery/audioGallery.xsl	(revision 34856)
+++ main/plugin-multimedia/stylesheets/content/audioGallery/audioGallery.xsl	(working copy)
@@ -55,7 +55,12 @@
                         document.getElementById('player-<xsl:value-of select="$uniqueId"/>').setAttribute('href', baseUrl + href);
                         
                         //  install Flowplayer inside a#player
-						$f("player-<xsl:value-of select="$uniqueId"/>", "<xsl:value-of select="ametys:pluginResourceURL('multimedia', 'swf/flowplayer-3.2.7.swf')"/>", {
+						$f("player-<xsl:value-of select="$uniqueId"/>", {
+		                    src: "<xsl:value-of select="ametys:pluginResourceURL('multimedia', 'swf/flowplayer-3.2.7.swf')"/>",
+		                    onFail: function() {
+		                        $j("#player-<xsl:value-of select="$uniqueId"/>").html('<i18n:text i18n:key="CONTENT_AUDIO_GALLERY_UPDATE_FLASH" i18n:catalogue="plugin.multimedia"/>');
+		                    }
+		                }, {
                             // use baseUrl so we can play with shorter file names
                             // baseUrl: new RegExp('^(https?:\/\/[^\/]+)(\/.*)?').exec(window.location.href)[1],
                             
@@ -154,7 +159,7 @@
 		    </xsl:if>
 	
 	   	    <noscript>
-				<p class="alternative-link"><a href="{resolver:resolve(file/@type, file/@path)}"><i18n:text i18n:key="CONTENT_AUDIO_GALLERY_NO_SCRIPT_DOWNLOAD" /></a></p>
+				<p class="alternative-link"><a href="{resolver:resolve(file/@type, file/@path)}"><i18n:text i18n:key="CONTENT_AUDIO_GALLERY_NO_SCRIPT_DOWNLOAD" i18n:catalogue="plugin.multimedia" /></a></p>
 				
 		    	<xsl:if test="alt-text != ''">
 	   				<p class="alternative"><xsl:value-of select="alt-text" /></p>
Index: main/plugin-multimedia/stylesheets/content/multimediaGallery/multimediaGallery.xsl
===================================================================
--- main/plugin-multimedia/stylesheets/content/multimediaGallery/multimediaGallery.xsl	(revision 34856)
+++ main/plugin-multimedia/stylesheets/content/multimediaGallery/multimediaGallery.xsl	(working copy)
@@ -55,7 +55,12 @@
                     player.attr('href', baseUrl<xsl:value-of select="$uniqueId"/> + player.attr('href'))
                     
                     //  install Flowplayer inside a#player
-                    $f("player-<xsl:value-of select="$uniqueId"/>", "<xsl:value-of select="ametys:pluginResourceURL('multimedia', 'swf/flowplayer-3.2.7.swf')"/>", {
+                    $f("player-<xsl:value-of select="$uniqueId"/>", {
+	                    src: "<xsl:value-of select="ametys:pluginResourceURL('multimedia', 'swf/flowplayer-3.2.7.swf')"/>",
+	                    onFail: function() {
+	                    	$j("#player-<xsl:value-of select="$uniqueId"/>").html('<i18n:text i18n:key="CONTENT_MULTIMEDIA_GALLERY_UPDATE_FLASH" i18n:catalogue="plugin.multimedia"/>');
+	                    }
+	                }, {
                         clip: {
                             // use first frame of the clip as a splash screen
                             autoPlay: false,
@@ -142,7 +147,7 @@
 		    </xsl:if>
 	
 	   	    <noscript>
-				<p class="alternative-link"><a href="{resolver:resolve(file/@type, file/@path)}"><i18n:text i18n:key="CONTENT_MULTIMEDIA_GALLERY_NO_SCRIPT_DOWNLOAD" /></a></p>
+				<p class="alternative-link"><a href="{resolver:resolve(file/@type, file/@path)}"><i18n:text i18n:key="CONTENT_MULTIMEDIA_GALLERY_NO_SCRIPT_DOWNLOAD" i18n:catalogue="plugin.multimedia" /></a></p>
 				
 		    	<xsl:if test="alt-text != ''">
 	   				<p class="alternative"><xsl:value-of select="alt-text" /></p>