Logitech music playback software not supported for iOS 11

Hi,
Now that the Logitech app no longer works, I’m searching for an app to play my music from a Synology NAS to my SBT, controlled by an iOS device. I’m using mconnectHD, and it sounds great, but I’ve lost gapless playback despite mconnectHD stating that their product offers this feature. Any suggestions on how to get gapless back into my life? Pressing play after each song is a drag!
Thanks!!