generate dartisans from playlist, keep everything up to date

src/site/dartisans/dartisans-audio.xml

Index: src/site/dartisans/dartisans-audio.xml
diff --git a/src/site/dartisans/dartisans-audio.xml b/src/site/dartisans/dartisans-audio.xml
index e52714face85b52141919e6661a39ebbf470e917..8745ce6488bc9f67570cc6b7d2bd1b1b768eacec 100644
--- a/src/site/dartisans/dartisans-audio.xml
+++ b/src/site/dartisans/dartisans-audio.xml
@@ -20,6 +20,7 @@ layout: none
   </itunes:category>
   {% injectdata episodes dartisans/episodes.yaml %}
   {% for episode in page.episodes.episodes %}
+  {% if episode.file %}
   <item>
     <title>{{ episode.title }}</title>
     <description>{{ episode.description | strip_html }}</description>
@@ -27,6 +28,7 @@ layout: none
     <guid>{{ page.episodes.url-prefix }}{{ episode.file }}</guid>
     <enclosure url="{{ page.episodes.url-prefix }}{{ episode.file }}" length="{{ episode.length }}" type="audio/mpeg" />
   </item>
+  {% endif %}
   {% endfor %}
 </channel> 
 </rss>