Sound only on some apps (ahi)

I am having a blast with my revived x5000.

BUT - audio only works with some apps. I am not sure what make the card is, but I know it to have worked perfectly in the past. In Quake2 and Quake3 there is perfect sound. In AmigaAmp3 and TuneNet, there is no sound. Also, in the Sound prefs app, the boot sound doesn't play, and the test sound buttons give some crazy no good behavior.

Apparently, I am using emu10kx.audio.

Is there some hint, that I am missing?

@elfpipe

sound prefs test sound only ever worked with a massive amount of trickery for me, so i don't bother

AmigaAmp has it's own sound settings, you might want to change the output unit and see if that solves it

tunenet I don't know, too buggy for my liking