That sounds like an Nvidia Shield status message. Have you moved the spotify app to the SD card (the app itself and not the cache)? If so, this isn't supported so you should try moving the app it back to internal storage and restartthe Shield.
this is happening to me on an iPhone 6 my music will stop and then play and a bleeping sound occurs with it, also skips the song while playing and then just skips to the next song and does the same thing. this is the first time I've experienced this but it's a big problem!!