Converter which takes single-channel ImpulseTracker modules as input and outputs a fSound .fss file, for use with fsound.exe. fSound is available here. This converter aims for the version called "fsound.zip". The Pytrax/impulsetracker-parser library is used and slightly modified to work with Python 3.

Improved version of: https://gist.github.com/jangler/9565970

• Squarewaves of any volume and pitch are supported.
• White Noise of any volume is supported.
• Tempo Changes are supported. (Txx with values bigger <= 20 and Axx).
• Kick and Snare Samples are supported.
• Only use an instrument setting, volume or effect along with a note, otherwise it will throw an error.

• download/clone repo
• make sure Python 3 is installed
• write your song using the test.it (follow the limits listed below)
• convert your song with

   python it2fss.py test.it

• Square Waves can be produced between C-2 and B-8 (C-1 to B-7 in fSound), using Instrument 1.

• White Noise is always the same pitch, using Instrument 2.

• Kick uses Instrument 3 and Snare uses Instrument 4.

• Make sure to set an instrument for every note you put in.

• Square and Noise have volume control. v00 is lowest, v64 is highest.

• The values get mapped to the 16 available sound values in fSound (0-F).

• Non-set volume gets mapped to f (loudest).

• 0.5: Massive Refactoring; added Axx support; sample-mapping via instrument, not octave; Volume is now mapped from 0-64 values, non-set-volume doesn't map to None anymore
• 0.4.1: Fixed a bug where consecutive drum notes would be combined into one
• 0.4: Added Tempo Change Support
• 0.3: Added Sample and Volume Support
• 0.2: Fixed a bug that occurred when translating a single IT note into multiple FSS notes.
• 0.1: Initial creation of program.