OSS 3.99.1f does not work for me on FreeBSD 4.10-RELEASE-p2 #1 (SMP). It installs fine with no errors, but then only gives a sort of modulated static. I tried playing realaudio and then tried playing a local MIDI file with oss/mplay. OSS398f works fine in both examples. I executed soundoff and then deleted all visible files (except my license.asc) from the /usr/lib/oss directory before installing another version.
The Readme for OSS3.99.1f indicates that it is only for FreeBSD 5.x, yet this is the version I downloaded when I selected FreeBSD 4.10 SMP. OSS398f works fine. I just wanted to report that the newer version doesn't work for me.
I have FreeBSD 4.10-RELEASE-p2 #1 (SMP),
2 x 233MMX Pentium,
MediaTrix AudioTrix 3D-XG (ISA)