Where is the audio library for 11.31

[Markqwerty]

I am migrating a build environment from 11.11 to 11.31. On 11.11 there are audio files in /opt/audio/include that came from the B3394BA product. What package/product do I need to install on 11.31 to obtain these files?

On 11.11:

-r--r--r-- 1 bin bin 51977 Jun 12 2002 Alib.h
-r--r--r-- 1 bin bin 12979 Jun 12 2002 AlibP.h
-r--r--r-- 1 bin bin 10894 Jun 12 2002 Audio.h
-r--r--r-- 1 bin bin 6014 Jun 12 2002 AudioP.h
-r--r--r-- 1 bin bin 12507 Jun 12 2002 CUlib.h
-r--r--r-- 1 bin bin 13698 Jun 12 2002 CUlibP.h
-r--r--r-- 1 bin bin 3715 Jun 12 2002 Play.h
-r--r--r-- 1 bin bin 2088 Jun 12 2002 PlayP.h
-r--r--r-- 1 bin bin 3010 Jun 12 2002 Record.h
-r--r--r-- 1 bin bin 1885 Jun 12 2002 RecordP.h