You could try something like this TTS on Bluetooth speaker via Raspberry Pi even if your on a NAS. basically you have to tell the OS to use that bluetooth dongle I dont think it will work out of the box. best of luck
You could try something like this TTS on Bluetooth speaker via Raspberry Pi even if your on a NAS. basically you have to tell the OS to use that bluetooth dongle I dont think it will work out of the box. best of luck