If you use Tunify on an iPhone or iPad, you can use Apple AirPlay to get the sound to play on an AirPlay-compatible smart speaker or TV.

The crossfade feature - which provides a smooth transition between two songs - can cause problems when using AirPlay 2 (the 2nd version of Apple AirPlay). Songs may break off prematurely or start only after a few seconds.

Do these problems occur on your device? If so, disable crossfading via the Options menu in your Tunify app.