In the config.ini section of the FAQ, it shows the options for notify as:
1 - Does NOT output song / artist / etc on the serial port.
2 - Puts song/artist/etc on the serial port.

That's rather confusng as the numbers are really
0 - do not display info
1 - display info.

Being a relative unix moron, this is extremely confusing as to which values I should really put in. Especially when things are like: mute = -1, but the options are 0,x,and y.