Life would be much easier for you if you would realize that your are harping on a isolated statement. If you can find any reference on how to use the tags in the player manual it would be a great help. Tag support will only found in the documentation for the MusicMatch software.
Does this make sense to you?
I hope you can soon get over this hurdle. If not research it some more, call EDIG and then get back to me.
Fiction Factor, the portion of the referenced post from "The MXP 100 is a sleek, high-quality..." onwards is a copy of what YOU posted. It does not appear in the manual.