description, duration=0, summary="Set state to NULL->PLAYING->NULL 20 times", need-clock-sync=true
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
set-state, state="null"
set-state, state="playing"
stop;