Hi! Shingomera,
I am sorry about that my English isn't good enough. Hope you understand what I talking about:
I learn to create music mod from this article. [Link]
I use this program. [Wwise v2015.1.9]
It is very hard to create music mod when no one teach you step by step.
But, I can help you to create your music mod if you don't mind to send music files to me.
First, you need to download this file and unzip it. [BGMFoldersTemplate.rar]
Then, place your music files in the folders by following instructions:
(Maximum 15 songs each folder) Music for garage: hangar_prem_v2_music_lobby, hangar_v2_music_lobby
(Maximum 1 song) Music for login screen: loginscreen_music_start
(Maximum 15 songs) Music for playing after game is start to combat: music_combat
(Maximum 1 song) Music for result page when victory: music_victory
(Maximum 1 song) Music for result page when defeat: music_defeat
(Maximum 1 song) Music for result page when drawn game: music_drawn_game
(Maximum 7 songs each folder) Music for loading map screen: remain folders (difference map you can place difference music, or all map place same sound files for same music if you like)
Above musics will play randomly in same group (folder)
Next, Repack these music folders to winrar and send to me, I will help you to create your music mod.
p.s.
The mod will not stable if too many songs in folder
The music files must be uploaded in WAV format.