Implementation of YAMAHA ADPCM Playback (MFi Version `0400`)

## Game
- Game title: EXIT EX
- Version / release: N904i Version

## Issue
Inside `sound_se.pak` within `exitn904i.jar`, Sound Effect ADPCM MLDs containing an `ainf` chunk can be found at the following offsets.

- 0xB334
- 0xDE7C
- 0x189C6
- 0x1BB5C
- 0x2C6EF
- 0x31CF7
- 0x39B7A

I’m sorry, but there is currently no emulator available that can play back YAMAHA ADPCM, so I am unable to record video.
I don’t know where in the game it plays either.
(However, since it is a preinstalled application on the N904i, it may be possible for those who still own the device.)

## Evidence
- Playback on MCP-MA7.
[exitex.mp3](https://github.com/user-attachments/files/26902690/exitex.mp3)