For the standalone version, visit https://thunderstore.io/c/lethal-company/p/NewDiranalt/Helldivers_FTL_Jump_Music/
(FYI: Non-addon version overwrites PizzaTowerEscapeMusic's config! You'll only be hearing the FTL Jump Music.)
To do so, simply go to PizzaTowerEscapeMusic's config (bgn.pizzatowerescapemusic.cfg) in whatever mod manager / your files, and add FTLJump to the Scripts section: Default,FTLJump
Adds the 5 or so Helldivers II FTL jump tracks to the ship's moon transit sounds.
Acts as an Addon for PizzaTowerEscapeMusic, in-case you'd like to use it alongside other mods which overwrite the main Default.json script.
PizzaTowerEscapeMusic is an awesome mod that allows you to do neat stuff using its scripting system: https://thunderstore.io/c/lethal-company/p/BGN/PizzaTowerEscapeMusic/wiki/819-scripting-objects-scriptevents/