This laptop (PowerBook 3,5) still works with 3.10 and audio still does not work, as described above.

Also, the boot splash screen shows my system as 667 MHz but actually it's an 867 model. I remember reading something about why this happens but I can't find it anymore.

This is one of my favorite models because it can natively boot Mac OS 9.2.2 through OS X 10.5.8 *and* MorphOS!