Hi Mark.
I can confirm this happens - that the music resumes after TTS when the player is paused. This happens with both Squeezeplay and Squeezelite players.
log:
2017-01-26 12:55:53.325 [DEBUG] [eezebox.internal.SqueezeBoxAudioSink] - Squeezebox audiosink processing audioStream /audio/c8a3cac5-0fe7-4b9c-ab47-d286566ef124 of format AudioFormat [codec=MP3, container=NONE, ]
2017-01-26 12:55:53.326 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Play notification sound on player 20:cf:30:53:a1:cd at URI /audio/c8a3cac5-0fe7-4b9c-ab47-d286566ef124.mp3
2017-01-26 12:55:53.329 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Cur State: vol=90, mut=NOT MUTED, pwr=ON, stp=NOT STOPPED, ctl=PAUSED, shf=OFF, rpt=OFF, tix=0, tnm=38, tim=126
2017-01-26 12:55:53.331 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Setting up player for notification
2017-01-26 12:55:53.331 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd pause 1
2017-01-26 12:55:53.333 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd mixer volume 90
2017-01-26 12:55:53.334 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Playing notification
2017-01-26 12:55:53.335 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd playlist add http://192.xxx.xxx.xxx:8080/audio/c8a3cac5-0fe7-4b9c-ab47-d286566ef124.mp3
2017-01-26 12:55:53.336 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Waiting for playlist to be updated...
2017-01-26 12:55:53.738 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Done waiting for playlist to be updated
2017-01-26 12:55:53.740 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd playlist index 38
2017-01-26 12:55:53.743 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Waiting for notification message to finish...
2017-01-26 12:55:57.451 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Done waiting for notification to finish
2017-01-26 12:55:57.453 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd playlist delete 38
2017-01-26 12:55:57.455 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Waiting for playlist to be updated...
2017-01-26 12:55:59.160 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Done waiting for playlist to be updated
2017-01-26 12:55:59.162 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Restoring player state
2017-01-26 12:55:59.164 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd mixer volume 90
2017-01-26 12:55:59.167 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Resuming last item playing
2017-01-26 12:55:59.168 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd playlist index 0
2017-01-26 12:55:59.171 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd time 126
2017-01-26 12:55:59.173 [DEBUG] [ebox.handler.SqueezeBoxPlayerHandler] - Pausing the player
2017-01-26 12:55:59.174 [DEBUG] [ebox.handler.SqueezeBoxServerHandler] - Sending command: 20:cf:30:53:a1:cd pause 1
I compiled the latest version of squeezelite with your workaround for the Raspberry Pi and it seems to be working ok in my piCorePlayers.
https://github.com/airix1/squeezelite/releases/download/v1.8.6-830/squeezelite-armv6hf-ffmpeg
https://github.com/airix1/squeezelite/releases/download/v1.8.6-830/squeezelite-armv6hf-noffmpeg