Thanks mhancoc7 for that older debian package for lxdoom-sndserv.
I aptget remove lzdoom-sndserv
and installed the new one with dpkg.
Now I have sound. . . . . Are there so few people playing doom 1 on ubuntu? It took me a while to find this solution. For doom fans, install the freedoom package (in universe) to see a new version of doom with much more interesting sound.
It seems odd that there's no fullscreen ability on lxdoom though . . .
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