Analytics?

Sure, no reason you couldn’t integration the player with Google Analytics. You’d just need to set up some Event Tracking: https://developers.google.com/analytics/devguides/collection/gajs/eventTrackerGuide

The reason is to display the number of any MP3 reproductions in the site, using player.

This request would be more appropriate against the JetPack plugin itself -my plugin is just a wrapper for that.