Brought back the Service Shop music track that was formerly in ETS2, plus a remixed version of it.

New non-loopable Service Shop short music additions:
- Added the "Garage Retro Style" music track that was formerly in ETS2.
- Added jazz music track.

New non-loopable main menu short music additions:
- Added unused "Garage" music track from American Truck Simulator

2 new faster playback speed variants for one of the truck upgrade music tracks.
Added in a track from German Truck Simulator to be used for the cutscene music.
Optimized file size.

Rework of mod:

- Completing a delivery now goes straight into the regular main menu music from the mod.
- Removed a few music tracks to optimize the file size, including cutscene music.
- 3 new jingle variations mixed into the music after a delivery is completed.
- 1 new sound effect for entering the Service Shop before the truck upgrade music plays.
- Partitioned the music bank files in preparation for game version 1.57 and above.
- Main menu music tracks now set to be loopable, just like how it was in the pre-FMOD era of the game.
- Repacked with newer version of the Game Archive Packer for more efficient loading.
- Reduced file size of the mod image in the Mod Manager.

Note: If the music stops playing after an extended amount of time spent in the main menu, you can navigate to the World Map then close it to get the music to initialize again. This should be less of an issue now, however

Added Bus Driver theme music as a main menu track

Rework of mod:
- New soundtracks (including original themes from 18 Wheels of Steel & German Truck Simulator).
- Fixed the issue where the music would stop after customizing your truck for a long time.
- Added an extended version of the former truck upgrade music from pre-2014 ETS2.
- Updated mod title, description and images.

Added optional mod support for Convoy mode.

Updated mod icon and description

- Added an extended version of the former truck upgrade music from pre-2014 ETS2.
- Reduced file size.

Fixed issue where music was not looping

Added 1 more classic ETS2 menu music track