hello!

No. Sportstracker doesn't support it.
I've found different applications that can choose and even pitch your music in your headphones to your hearts bpm but so far nothing that really gets you to sync with your actual step.
running with the same bpm in heart and legs is off course fine and all but doesn't guaantee the actual sync. what I'm after is to see what happens if you really step at the same time as the heart pounds.
Will it be the perfect way of getting energy and blood circulating?
Will it cause overheating, stress and collapse?
Will it make no difference at all?