Barry,

The Track (H) button is a discrete IR code that will allow track selection. Your 'Before Track 1 Digit' and 'Before Track 2 Digits' must use this code.

If you do a search on the files section searching for 'Lyndel', you will find a CCF in a zip file named something like SonyCDChanger.zip. This CCF contains on the 'Track/Keypad' panel, the IR code you need.

If you can't figure this out, shoot me an email and I'll send you a CCF that you can use to Hook SNL into your changer. Please indicate in your email what Command Mode your changer is set for(1,2, or 3). (Selectable by either menu option or hard-switch on the back of the unit).