Gmail to integrate music player (pic)?

Gmail is still in the beta stage, which means it will continue to evolve and change. Last time, we mentioned that Gmail added a navigation bar. Two images that were just discovered show us the likely changes that Gmail may undergo. From the images, we can see that when an email attachment is music, a "Play" button is added. After clicking "Play", a player pops up as shown in the second image — though it's not very cool, it still looks decent. For now, let's call it the Gmail Player.