Google started rolling out a nifty update to Gmail with the Card UI earlier today, but since the update is staged, it may take a while to get to a device near you. Not to worry - we've gotten a hold of the APK (thanks, Kevin!) and verified it's indeed legitimate. You can find it below on several mirrors. As always, just download and install - simple as that.
There's no shortage of music players for Android, but each one fills a particular niche that another offering just doesn't quite address. CloudAround, for example, is a great option for people who love cloud storage but don't want to trust their files entirely to one service or happen to rely on a service that doesn't offer a music streaming app (i.e. most of them). NicePlayer's draw is perhaps more superficial. This is a music player for people who love a clean card-style layout and can't get enough of apps that embrace it.