Hi, as this thread turns up on the first page of searches for those having issue with LB and CDI games; I wanted to note that, if you wish to keep the info data in your game's file name, put the extra data in parenthesis.
ie; LB won't recognize "Omikron v1.0.1. Eng-T U !" (I made this name up) because there's never been a Dreamcast game with that name.
LB will, however, recognize "Omikron (v1.0.1.) (Eng-T) (U) (!)" as the non-relevant info data has been placed in parenthesis; acting like the 'REM' command for adding remarks in .bat files.