help/suggestions for music playback in living room

Current Setup

1) Music rests on Synology NAS

2) Playback through Pioneer VSX-1022K AV receiver.

Need best options for controlling the music (what to play, pause, skip).
The android app for the Pioneer device is very basic & going through the music list is really painful esp. since it does not have any means of quick lookup.

Is there any device I can hookup to the AV Reciever which will make selecting and playing music via the AV Receiver easy?
Ideally would like device to be cheap. I do not want to use the TV is possible so control via secondary screen would be ideal.