This is an old revision of the document!
To filter out Library updates from debug log simple find the below code:
<category name="org.serviio"> <priority value="DEBUG"/> </category>
and add the below code under it:
<category name="org.serviio.library.local"> <priority value="INFO"/> </category> <category name="org.serviio.library.online"> <priority value="INFO"/> </category>