I'm finding that 24bit, 96kHz sample rate FLAC files with embedded cuesheets do not play gaplessly with LMS. I've tested this with versions 7.9.2 and 8.3.
I've prepared a couple of test files demonstrating that a cuesheet, when embedded in a 16bit, 44.1kHz FLAC does play gaplessly on LMS, while the same cuesheet, when embedded in a 24bit, 96kHz FLAC, does not. (That same 24bit, 96kHz FLAC, when played using FB2K, is gapless.)
Michael, are you interested in looking at this?