Yamaha YMF734 audio latest Driver For Win9x/NT4/2000/XP (January 3, 2001)
Supposedly, this is the same chipset as ALS4000.
I found this driver on a Japanese website (just barely). Please leave comments if you test this driver.
File size: 6027 KB.
Note: when you unzip, you will have 3 files (one for each OS). Please use the Windows 2000 driver for XP.