I was correct about playlists: this is data from music.txt
Event ID Name Wwise Object Path Notes
12957221 Playlist_Hiberheim_Entrance_new \Music\Explore\Playlist_Hiberheim_Entrance_new
15272676 Playlist_Beach_new \Music\Explore\Playlist_Beach_new
119257277 Playlist_HIB_WhiteWitch_new \Music\Explore\Playlist_HIB_WhiteWitch_new
228175584 Playlist_Friendly_new \Music\Explore\Playlist_Friendly_new
380813451 Playlist_LUC_GoblinVillage_new \Music\Explore\Playlist_LUC_GoblinVillage_new
648636958 Playlist_HIB_Cave_new \Music\Explore\Playlist_HIB_Cave_new
709302771 Playlist_Dungeon_new \Music\Explore\Playlist_Dungeon_new
887107375 Playlist_MainTheme_new \Music\Explore\Playlist_MainTheme_new
980077576 Music_Credits_Stop \Music\Music_Credits_Stop
984018499 Playlist_Home_HallOfHeroes_new \Music\Explore\Playlist_Home_HallOfHeroes_new
1106519134 Playlist_CharScreen \Music\Explore\Playlist_CharScreen
1305191925 Playlist_KnightsTomb_new \Music\Explore\Playlist_KnightsTomb_new
1491766670 Playlist_Boss_new \Music\Explore\Playlist_Boss_new
1704042509 Music_Shroud_Enter \Music\Music_Shroud_Enter
1728483233 Music_Shroud_Exit \Music\Music_Shroud_Exit
1843872079 Music_Fight_End \Music\Music_Fight_End
1865527937 Playlist_ImmaculateVillage_new \Music\Explore\Playlist_ImmaculateVillage_new
1882971781 Music_Credits \Music\Music_Credits
1940217408 Music_Game_Enter \Music\Music_Game_Enter
2022618719 Playlist_CysMarketFade \Music\Explore\Playlist_CysMarketFade
2227898505 Playlist_Sneaking_new \Music\Explore\Playlist_Sneaking_new
2250386541 Audio_MainMenu_Enter \Music\Menus\Audio_MainMenu_Enter
2250473094 Playlist_CysMarket_new \Music\Explore\Playlist_CysMarket_new
2522405638 Playlist_Hiberheim_new \Music\Explore\Playlist_Hiberheim_new
2629389560 Playlist_CysBeach_BC \Music\Explore\Playlist_CysBeach_BC
2845638018 Playlist_Mute_Trans \Music\Explore\Playlist_Mute_Trans
2884384370 Playlist_TavernFade \Music\Explore\Playlist_TavernFade
2901597576 Playlist_Luc_Bard_1 \Music\Special\Playlist_Luc_Bard_1
2901597578 Playlist_Luc_Bard_3 \Music\Special\Playlist_Luc_Bard_3
2901597579 Playlist_Luc_Bard_2 \Music\Special\Playlist_Luc_Bard_2
2901597580 Playlist_Luc_Bard_5 \Music\Special\Playlist_Luc_Bard_5
2901597581 Playlist_Luc_Bard_4 \Music\Special\Playlist_Luc_Bard_4
2906175779 Playlist_Homestead_new \Music\Explore\Playlist_Homestead_new
3019209822 Playlist_Beach_Start \Music\Explore\Playlist_Beach_Start
3059316805 Playlist_Immaculate_new \Music\Explore\Playlist_Immaculate_new
3235861421 Playlist_LUC_Silverglen_new \Music\Explore\Playlist_LUC_Silverglen_new
3498131715 Playlist_Tavern_new \Music\Explore\Playlist_Tavern_new
3674175934 Playlist_Forest_new \Music\Explore\Playlist_Forest_new
3758903569 Playlist_CassandraTomb_new \Music\Explore\Playlist_CassandraTomb_new
3825354510 Playlist_Undead_new \Music\Explore\Playlist_Undead_new
3876948117 Playlist_BlackCove_new \Music\Explore\Playlist_BlackCove_new
3986302892 Music_Fight_Start \Music\Music_Fight_Start
4183273859 Playlist_Trollcave_new \Music\Explore\Playlist_Trollcave_new
and this is what is written afterwards:
treamed Audio ID Name Audio source file Generated audio file Wwise Object Path Notes
5237137 Kirill Pokrovsky-Reborn C:\Develop\ART_ASSETS\EyesOfAChild\Main\Data\Public\Main\Assets\Sound\.cache\Windows\sfx\kirill pokrovsky-reborn_3f237e3a.wem 5237137.wem \Interactive Music Hierarchy\Music\Music_Game\Music_Shroud\Music_Explore\Playlist_Immaculate_new\Kirill Pokrovsky-Reborn\Kirill Pokrovsky-Reborn
15897208 Kirill Pokrovsky-Soul Cage (Part I) C:\Develop\ART_ASSETS\EyesOfAChild\Main\Data\Public\Main\Assets\Sound\.cache\Windows\sfx\kirill pokrovsky-soul cage (part i)_727c4b9a.wem 15897208.wem \Interactive Music Hierarchy\Music\Music_Game\Music_Shroud\Music_Explore\Playlist_Hiberheim Entrance_new\Kirill Pokrovsky-Soul Cage (Part I)\Kirill Pokrovsky-Soul Cage (Part I)
21299617 Kirill Pokrovsky-Shadowstorm C:\Develop\ART_ASSETS\EyesOfAChild\Main\Data\Public\Main\Assets\Sound\.cache\Windows\sfx\kirill pokrovsky-shadowstorm_659f4219.wem 21299617.wem \Interactive Music Hierarchy\Music\Music_Game\Music_Shroud\Music_Explore\Playlist_Dungeon_new\Kirill Pokrovsky-Shadowstorm\Kirill Pokrovsky-Shadowstorm
as an example.
problem is, I still don't get how customizable this is. nor I understand how to actually add new music, a customized track, say, for each area and for each battle in the area, nor how to make each boss battle enjoy its customized music. nor I understand how much the engine supports looping, cuepoints and other special effects.
EDIT: there are tracks from beyond divinity and divine divinity (sighs of elvenkind) as well

I see little, if nothingm from the Dragon Knight saga tho.
all .lsx files can be opened in Notepad++
it's very crude, but better than nothing.