FS-7648 add stereo

conf/testing/autoload_configs/local_stream.conf.xml

@@ -49,7 +49,7 @@
   <directory name="video" path="$${sounds_dir}/music/video">
     <param name="rate" value="48000"/>
     <param name="shuffle" value="true"/>
-    <param name="channels" value="1"/>
+    <param name="channels" value="2"/>
     <param name="interval" value="10"/>
     <param name="timer-name" value="soft"/>
   </directory>