this guy is certainly moving along!
Wow! Can't wait to sink my mitts into this.
Really looking forward to the development of NES sound engine stuff... even being able to export instrument data would be incredibly handy. Best of luck! 
Version 1.4 released: http://kkfos.aspekt.fi/projects/nes/tools/pornotracker/
This version also includes a new 6502 playback library, called MUSE.
Changes:
- MUSE (6502 playback library for games and demos)
- Linear frequency handling (note slide speed and vibrato is not dependent on the note frequency anymore)
- Glissando
- Max. channel volume was changed from 15 to 63
- Modifier keys don't hang when using Alt+Tab to switch windows (SDL fix)
- Support for display drivers that don’t support non-power-of-two textures
- Fix to copy/pasting from the triangle channel
- Fixed (bad!) bugs in autodelay
- Volume envelope ending in 0 with loop is now considered a note off
- Fixed note slides/etc in the example songs
- Various other bugfixes
Hey! I finally got around to trying this out! Awesome tracker, I haven't really gotten around to everything but I'm digging the sounds it can make. Very fond of the PCM Saw and Pulse! I was messing with the instrument editor today and came up with something for WeeklyBeats with it. (Absolutely no compositional thought/direction here...) Just some nice sounds.
Generally I prefer mml, but Musetracker/Pornotracker is a really solid tool that more people should use.