The Virtual Sampler Library (VSL.DLL) provides applications running
on Pentium-class PCs under MS Windows 9x/ME/NT/2000/XP with a
MIDI-controlled, low-latency, fully programmable wavetable module
implemented entirely in software.

The Virtual Sampler SDK contains the documentation and code needed to
use the Virtual Sampler Library in your own programs. It also includes
the Mellosoftron, the live, emulated sampler based on the Virtual
Sampler Library, for quick sound patch creation and editing.
(For size reasons, the VS SDK Evaluation Package and the Mellosoftron
are distributed in separate archives. The Mellosoftron archive is
available from our site: http://www.polyhedric.com/software/).