Like I said, best to hunt for the most recent APK file. As of 2017, the most recent update is V. 3.3.3.0.

Nevermind, it wasn't a backup I was talking about, but simply some sort of music sync feature. Honestly it's probably best to just use Scrobbler, I have one with last FM and the mass connection Scrobbler of Pano and Simple Scrobbler. 

No, it still works and functions but I have noticed that the Twitter backup feature simply does not work, probably hasn't for a few years now. So I'd assume that the plug in for the service was cut, perhaps as a result us low user has? Idk couldn't say for sure. 

So

really speaking no not dead, but you'll be hard pressed to try and download it on newer versions of software/OS. I lucked out and was able to installed it before updates for my phone came along. 

Outside of that, you'd best hunt down an APK of the app.