Rotary clicks are measured on a per second basis. That means if the wheel registers 3 clicks in one second; onRotary will report three. Using the Rotary wheel for a 'Hold' function seems a little bit impossible... It sounds like you are trying to scroll based on a key press: This is somewhat contrary to Rotary methods unfortunately.

Although I would prefer to take another route, you could try the following:

-The Rotary wheel scans for clicks every second and reports them to onRotary.
-If you combine a timer mechanism with the rotary wheel report; you could look for a minimum of two clicks each second.
-Combine all that with a While loop: While Click == 2 every second execute or maintain your Hold action.

Hope this helps!

Cheers // Jason

PS: Does your Yamaha take control of the iPod through the dock and are you able to send RS232 commands to the Yamaha effectively controlling the iPod indirectly?