Thanks, Frank and Richard!
I've got it working, both Voladj and Blitmenu. I will also try "Picker" and see if I like that one more or less than Blitmenu.
My only remaining question is what the parameters should be to match what Selecter used to do. Right now, my config is:
Volume Adjust On Normal:
/drive0/var/voladj 131072 3277 65536 30 80
Volume Adjust On Maximum:
/drive0/var/voladj 131072 10000 65536 30 80
Volume Adjust Off:
/drive0/var/voladj 131072 0 65536 30 80
I have no idea if the first and third parameters are correct, they were educated guesses based on lines referring to "2 << 16" and "1 << 16" that Drakino pointed out in Richard's source code.
Also, selecter had the advantage of remembering what to do across reboots (if you didn't hit a key, it would do whatever the last thing was). The combination of voladj/blitmenu doesn't seem to do this. I don't know how selecter did it in the first place, so I don't know if it's possible to do it with voladj/blitmenu.
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Tony Fabris