Whoooopsy .......
[Edit]
Just checked:
UFO - Enemy Unknown_DOS.zip
So that's the one, isn't it?
Xcom apocalypse is XCOM3.
So: no whoopsy.
[Editē]
BTW, just tried again from scratch.
happyfanatic, delete your gamefolder, and restart from scratch.
Your lines:
Mount C C:\users\jon\desktop\oldgames
mount d C:\users\jon\desktop\oldgames\xcom -t cdrom
c:
cd xcom
ufocd
Seems the setup screws some things up, don't run it.
Simply use those mount lines and run with
ufocd, you'll have sound FX and music.
Dosbox version 0.72, default config.