Fluxbox change or disable login sounds

open Home

Press CTRL+H to show hidden files

open .mint-fm2

open mint-fm2.conf

see how there are lines such as Login: /usr/share/sounds/mintfb-login.wav

you can carefully edit these lines or replace the sound /usr/share/sounds/mintfb-login.wav with a new sound of the same name

disable

Comment out these lines with a '#' or delete them completely