There are 2 file types use the .KSM file extension:
1. Pfaff Embroidery Design File
Stitch design file used by some Pfaff embroidery machines; contains a stitch pattern that can be automatically sewn by the machine; can be viewed and edited with the design software bundled with the embroiderer or with Embird Studio.
Updated: October 7, 2012
2. Ken Silverman Music File
Audio file used by games written with Ken Silverman's Build Engine; used by games such as Duke Nukem 3D and Shadow Warrior; can be played back with the IN_KEN (IN_KEN.zip) Winamp plugin.
Updated: August 20, 2012