i want to make a pi0 mp3 player, does this sound possible...

[dreemkitten]

Okay, so I recently bought a bluetooth usb dongle, and it turned out to have input lag and I couldnt use it with Dolphin Wii Emulator, so I bought a DolphinBar, awesome wiimote infrared and bluetooth receiver. I digress.
I want to make a portable raspberry pi0 mp3 player, and I would like to control it through a smart over bluetooth. As I would like to utilize the bluetooth dongle as well as save some money by not buying a display.

So i am thinking just a small box with some audio components that would make playing music sound rly good, through a headphone jack or through usb in a car stereo. I wanted to conceal the bluetooth dongle (it is small), and install some sort of music software on the pi0's sd card.
The catch is trying to control this software through an smartphone application. Does anyone think this sounds possible? I don't see why it couldn't be, but I thought I'd check here to see if any of you guys have experience with bluetooth controllers