The kq and kq-data packages were removed from Debian because of the unlicensed music: http://bugs.debian.org/575739
Meanwhile, the upstream KQ developers are tracking the music licenses in their wiki. So far, the composer of aa_arofl.xm has granted permission to distribute that file but not to modify it. It seems likely that the game will not be able to reenter Debian until all the music is replaced or made optional. http://sourceforge.net/apps/mediawiki/kqlives/index.php?title=Music_Licences
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