Thank you for this answer, now a second question please...
If/when a media file can be triggered from the sequential list, will it be possible to trigger a scene simultaneously? Then triggering a timeline is no more so important.
And the next question: in this case, if/when a media file is triggered, would the next entry let it run until the end or would it interrupt it? In other words, there should be an option where triggering the next event should not kill the previous one.
In fact I just realize that my wish is probably that the Sequential List would look a lot like a sequence list of "Buttons" - all features included... !
Maybe if you think of it this way, things would become easier to implement ?
BTW, you can count on me to beta-test it at will
(et même en français, qui est ma langue maternelle)