How did you make it play longer notes?
I made alot of soundpacks, each having slightly longer notes (1 beat, 2 beats, 4 beats, 8 beats etc..) The sound is produced when a function is called on the corresponding brick. ie. calling the function "4" on the named brick called "C4", the organ plays the C4 note for 4 beats ;)
No, it's not done that way. I could make a detailed discription of how the events are done, if wanted. Let me know.