Put .ogg and .mp3 music files in this folder that you would like to be played
while you play the xar package.

Consider the folder called
"xar_ying_world/xar_small_yellow_flower".
If that has music files in it (in that folder, not subfolders),
then when you are in a Small Yellow Flower,
the music in that folder will be played.
If on the other hand that folder has no music files in it,
then the music files in the parent folder xar_ying_world will be played instead
when you are in a Small Yellow Flower.

In general, the game will try to play a "playlist", which is the name of
one of these folders.  If that folder has no music in it, it will try the
parent folder, and if that is empty it will try the parent of the parent, etc.

To install this package into the game, but it in the Input/Packages directory.
Also have a package called Input/Packges/xar and list this package
as a dependency in "Input/Packages/xar/dependencies.txt".
