I also have DelfInit QUIET in user-startup (not the first). If you also have QUIET option, try to remove it and see if it prints out some errors or other info when failing?
Does delfinit work if you run it after OS has loaded?
I also have AHI 4.180 too.. but I think my Delfina worked fine with newer AHIs too when I still had them...
Btw. Delfmpeg is nice tool to test HW playback... but setting up delfinampeg.device for Amplifier or MHI for AmigaAmp are pretty easy too..
