[LongMan]

These work for me.

Code:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<node order="1" type="filter" visible="True">
       <label>Audio Books</label>
       <icon>icons\sidemenu\music.png</icon>
       <content>artists</content>
       <match>all</match>
           <rule field="source" operator="contains">
               <value>Books</value>
           </rule>
       <order direction="ascending">artist</order>
</node>

Code:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<node order="1" type="filter" visible="True">
       <label>Musik</label>
       <icon>icons\sidemenu\music.png</icon>
       <content>artists</content>
       <match>all</match>
           <rule field="source" operator="contains">
               <value>musik</value>
           </rule>
       <order direction="ascending">artist</order>
</node>

Code:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<node order="2" type="filter" visible="True">
       <label>Last Added Albums</label>
       <icon></icon>
       <content>albums</content>
       <match>all</match>
           <rule field="source" operator="contains">
               <value>Books</value>
           </rule>
       <group>albums</group>
       <limit>10</limit>
       <order direction="descending">dateadded</order>
</node>