It all works well, and we like the fact that each source has its own customized UI that looks custom-suited to the service it's for (the iPod player, for example, apes iTunes).
Rather than fill the device with bloatware apps or overlay a customUI, Sprint's installed a software button that takes you to a store exclusively designed for Sprint's new Android devices.
In addition, the phone comes with Meizu's unique Flyme OS, which features a custom designed UI, as well as cloud services such as data syncing, music store (China-only), and an applications market.