Left the description since the mod is epic. A awful selection of music for both the Company Cruiser and the Boombox. Judge my music choice if you wish but know that I will be slightly sad if you do.

CruiserTunes addon

adding custom songs to the company cruiser radio using CruiserTunes in the form of a mod check out: https://thunderstore.io/c/lethal-company/p/Mellowdy/CruiserTunes/