※ Please read first ※
- Resources for RPG Maker -
Just under LOOP.zip, OGG and M4A which can be used with 
RPG Maker VX, RPG Maker VX Ace, and RPG Maker MV, etc. are 
bundled.The contents of the "Assets_for_Unity" folder are not used.

- Assests for Unity -
The "Assets_for_Unity" folder in LOOP.zip contains ogg files divided 
into intro and loop. Be careful not to overwrite loop.ogg because its
file name is the same as the ogg files for RPG Maker right under zip.
This folder does not mean "Unity only". You can use these files with
any game dev tool.
Please note that although MP3 files are mainly the full version for 
audition use, they can of course also be used for game production.