This app allows for remote-controlling of Raspberry Pi radio: https://github.com/mick88/play-pi-remote

Features:
* Queue view
* jump between items in the queue (tracks and radio stations)
* Control playback: play/pause stop next/previous
* Volume: slider buttons and volume button binding
* Works with anny Play Pi installation - just enter your Raspberry Pi's IP address in the setup screen

Full source code and issues: https://github.com/mick88/play-pi-remote
Please contribute to make this app better