It's me again with the thinkpad. I have discovered another issue : the sound drivers for the CS4237B aren't really good ... There are basically two issues : 1 mixer behaving oddly
2 fm stuttering or having missing notes and sometimes is perfectly fine.

The drivers lenovo are giving on their website are acting improperly under windows 95 : it's like the mixer doesn't work, I can select the loudest setting in it, the computer will remain not very loud. There's also a "second" mixer with MMX written in its name that seem to do stuff, but still isn't perfect and finally there's tje DOS mixer that seem to have the greatest controls. Problem with DOS mixer : it seems to crash windows' mixer as the speaker icon tend to disappear.

Then I installed a slightly newer driver which only left a seemingly better "MMX" mixer that do its job, but it also brins a new problem (or should I say doesn't do anything for another problem) : it doesn't affect DOS ! Meaning that I always get low or muted wave sound. So again I need to use the dos mixer which affects windows.

Then like I said, the FM is glitchy at times and fine at other times. Basically, when I play a midi file with windows media player, it tends to stutter on some songs (When it works and that I don't touch anything audio-related, it stays fine, it doesn't get upset just by replaying the song. Also the stuttering songs are always the same, like if some instrument got set improperly) and in games some notes can be missing (but not when it's not "upset")

Has anyone dealed with that sound chip or have an idea on what could I do to fix this ? I'll make some records of the FM soon