billpealer:
dude i just realized,.. the busyPin is NOT in 1 line serial mode. ergo,.. your hum command won't work. Der!look at the code! in one line serial mode, the busypin is gone from the WT code, homes. you can assign it a pin in the int (which you did, because it is a hold over from your one line mode) or state in void setup (which you did not), but there is no code jamming in the WT 1line mode to change its state. right?!
The busy pin functions on the WT588D any mode. It's even programmable to go either high or low when a sound is playing. I have used it in key, one-line, and three-line modes with success.