it is included but the drivers only work on win xp and 2000 or 98 ,i bought a used older xp labtop off facebook market place with xp installed orignaly on it and theses drivers and sub comander softwear work
https://community.klipsch.com/index.php?/topic/149379-subcommander-rt12d/
ok heres the link it does have win98 and xp drivers plus it will not work on modern windows subcomander klipsch emailed this link to me