diff --git a/content/news/pentacast-3-osm.xml b/content/news/pentacast-3-osm.xml
index 081f387f5..af6165674 100644
--- a/content/news/pentacast-3-osm.xml
+++ b/content/news/pentacast-3-osm.xml
@@ -84,9 +84,16 @@ Teilnehmende: koeart, kolossos, christoph und constantin.
   <resource title="Pentacast 3: OSM" size="55079729"
             type="application/ogg"
             url="http://ftp.c3d2.de/pentacast/pentacast-3_osm.ogg">
+<alternative size="57180"
+type="audio/mpeg"
+url="http://ftp.c3d2.de/pentacast/pentacast-3_osm.mp3"/>
+
   </resource>
 <resource title="Pentacast 3: OSM Nachtrag" size="17790630"
 type="application/ogg"
 url="http://ftp.c3d2.de/pentacast/pentacast-3_osmnachtrag.ogg">
+<alternative size="18692"
+type="audio/mpeg"
+url="http://ftp.c3d2.de/pentacast/pentacast-3_osmnachtrag.mp3"/>
 </resource>
 </item>