IF YOU WANT TO USE DIFFRENT MUSICS, READ BELOW

- You don't need any tool

- You need EXACTLY 10 mp3 files
You can use the copies of same musics

- Re-name the musics like the original ones
EXAMPLE:

Air Flow          -->  air1
Air Flow          -->  air2
Air Flow          -->  air3
Air Flow          -->  air4
Air Flow          -->  air5
Air Flow          -->  air6
Clear Skies       -->  air7
Clear Skies       -->  air8
Metal Wing        -->  air9
Over the Horizon  -->  air10

(Names above (like "Clear Skies") are for example)

NOTE: If you use a copy of same music (like "Air Flow")
that music will be played more often

Like:
"Air Flow"         have 60% chance to be played becaouse there are 6 files that plays "Air Flow"
"Clear Skies"      have 20% chance to be played becaouse there are 2 files that plays "Clear Skies"
"Metal Wing"       have 10% chance to be played becaouse there are 1 file that plays "Metal Wing"
"Over the Horizon" have 10% chance to be played becaouse there are 1 file that plays "Over the Horizon"

Every single mp3 file have 10% chance to be played


- After you done everything,
just replace your musics with the original ones (they're located in "AIR_MUSIC" folder)

- If you completed all the steps above,
just launch the game and enjoy!

NOTE:
THERE MUST BE EXACTLY 10 MP3 FILE INSIDE THE "AIR_MUSIC" FILE

I know I'm explaining everything like you never used a computer before
but I don't want you to make any mistakes