I was trying to install The Dame was Loaded on Kubuntu only to find the dosbox version gog ships with uses outdated libraries, specifically libFLAC.so.8
Ive since patched the files to use the native dosbox and that seems to have fixed the issue.
Navigating into the files i changed the local reference to dosbox within the directory to just dosbox or dosbox-x.
Hmm i love dosbox-x more than dosbox since it has a better gui interface though saving options like automounting drives in the gui is difficult nigh impossible.

Ive reported this to gog but if you have any issues with their installer check in the file

gog_game_file_directory/support/gog_com.shlib and change the function to this:

Bash
run_dosbox() {
local conf_1="${1}"
local conf_2="${2}"
dosbox -conf "${conf_1}" -conf "${conf_2}" -no-console -c exit
}

By having it run native dosbox, it bypasses whatever version gog ships with