[nodestore player_name="name of my empeg"]

   [tree]

      [child type="P" FID="100" title="empeg"]

         [child type="P" FID="yyyy" title="abc"]

            [child type="T" FID="zzzz" title="bac" /]

            [child type="T" FID="aaaa" title="bca" /]

            [child type="T" FID="bbbb" title="cba" /]

         [/child]

         [child type="P" FID="WWWW" title="def"]

            [child type="T" FID="zozo" title="123" /]

            [child type="T" FID="aaaa" title="bca" /]

            [child type="T" FID="roro" title="456" /]

         [/child]

         [child type="P" FID="xxxx" title="qwe"]

            ....

         [/child]

         ....

      [/child]

   [/tree]

   [nodes]

      [node type="P" FID="100" title="empeg"]

      [node type="P" FID="xxxx" title="ttt"]

         [parents]

            [parent FID="100" title="empeg" /]

         [/parents]

         [tags]

            [tag type="title"]ttt[/tag]

            [tag type="source"]sssss[/tag]

            .....

         [/tags]

      [/node]

      [node type="P" FID="yyyy" title="abc"]

         .....

      [/node]

      [node type="T" FID="aaaa" title="bca"]

         [parents]

            [parent FID="yyyy" title="abc" /]

            [parent FID="wwww" title="def" /]

         [/parents]

         [tags]

            ......

         [/tags]

      [/node]

      [node type="T" FID="bbbb" title="cba"]

         .....

      [/node]

      [node type="T" FID="roro" title="456"]

         .....

      [/node]

      [node type="T" FID="zozo" title="123"]

         .....

      [/node]

      [node type="T" FID="zzzz" title="bac"]

         .....

      [/node]

   [/nodes]

[/nodestore]

First comes the complete tree (with repeated child nodes as needed - one child node per one FID mentioned in a playlist) and titles added for readability (identification is by FIDs, of course), followed by nodes (both lists and tunes) and their empeg-tag data (title, artist...). Parent tags are redundant, but come handy to human readers.