Audio broadcast on PLB-AS16

I've done this successfully with a timeline that sequenced a saving of the current state, restoring a preset state and explicity setting volume levels, then playing my broadcast. The following timeline event is a direct cut from the code, with the time variable array set to {0, 5000, 5000}, and the timeline created on an I/O event as TIMELINE_RELATIVE, and TIMELINE_ONCE. I found the delays necessary to give the AS16 time to save and recall the preset (which is what I used to store the current state).

TIMELINE_EVENT [DRIVE_ALERT]
{
    SWITCH(TIMELINE.SEQUENCE)
    {
        CASE 1 :
        {
            bComputerAudio = TRUE
	    
	    SEND_COMMAND vdvAudioSw, "'VMSP1'" 
            
            IF(bOutsideGate)
            {
                SEND_COMMAND vdvAudioSw, "'SSM6,6,6,6,6,6,6,6'" 
                SEND_COMMAND vdvAudioSw, "'S8L100%'"
            }
            ELSE
                SEND_COMMAND vdvAudioSw, "'SSM6,6,6,6,6,6,6,X'"
            
            SEND_COMMAND vdvAudioSw, "'S1L90%'"
            SEND_COMMAND vdvAudioSw, "'S2L90%'"
            SEND_COMMAND vdvAudioSw, "'S3L90%'"
            SEND_COMMAND vdvAudioSw, "'S4L90%'"
            SEND_COMMAND vdvAudioSw, "'S5L90%'"
            SEND_COMMAND vdvAudioSw, "'S6L90%'"
            SEND_COMMAND vdvAudioSw, "'S7L90%'"
        } 
        CASE 2 :
        {
            SEND_COMMAND dvWebLink, "'VOLUME-250'"
            SEND_COMMAND dvWebLink, "'LOAD_Q_IDX-1'"
        }
        CASE 3 :
        {
            SEND_COMMAND vdvAudioSw, "'VMRP1'"
	    bComputerAudio = FALSE
        }
    }
}         

The references to dvWebLink are the i!-MediaPlayer application running on a local computer. No idea why I named it that .

Also note, that although I am only referencing 8 zones in the preset command, the actual unit is an AS16.