Freescent 1 - HOG FILE.
Free HOG file for descent 1...
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Only non-free files it contains are the .256 files (palette index files)..
Does NOT contain any singleplayer missions (!), so get your own from the
internet! There are aplenty of free, quality missions to be found on the
internet!

Neither does it have any music, unless you think that silence is music.

Fun fact of the day: http://en.wikipedia.org/wiki/4%E2%80%B233%E2%80%B3
"4'33? (Four minutes, thirty-three seconds) is a musical composition by
 American avant-garde composer John Cage (1912–1992). It was composed in
 1952 for any instrument (or combination of instruments), and the score 
instructs the performer to not play the instrument during the entire duration
 of the piece. Although commonly perceived as "four minutes thirty-three 
seconds of silence",[1][2] the piece actually consists of the sounds of 
the environment that the listeners hear while it is performed.[3] Over 
the years, 4'33? became Cage's most famous and most controversial composition.[4]"

:D