Released 0.71 with preliminary SimSound support:
Release 0.70 had a nonworking Load SimSound button which would have thrown an exception if clicked.
This release adds SimSound to the GUI Tabs. Just Click Load SimSounds and select your mp3 audio folder. The files should get listed under the SimSound Tab in the Events Section. You can click the Play button to listen to the music. There are no arduino side functions yet. But at least you can listen to some music when you are playing the game. My intention is to be able to call simsound(uint8_t x) function from the arduino and that plays a sound in Windows corresponding to the ID number. There will eventually be separate functions for volume control and up/down selection (if you want to use this as a mp3 player or radio) or to use this to select custom cabin audio such as boarding, safety announcements, welcome aboard, or simply to play click and encoder rotation sounds as audio feedback when you press buttons or turn the rotary encoders.
Enjoy!
Chris
Update: Also posted an article about Propwash encoders and how to solve the issue of 2 detents being required before registering a direction.