Found many people complaining that there is no audio when CDex plays tracks. It's generally because the "Digital output" option is disabled in CDex Option > Global category. Issue is that's not abvious to find if it's rather a Windows or CDEx issue. Also when looking in CDex not looking in the Global category as not supposed to be there as rather expecting speciific sound ouput category.
"Digital ouput " option should be either actve by default and/or move that option to a more obvious category such as i.e. 'Sound ouput'