TTS via RSS - no sound

I try to add a rule which shall use “say” or “play a sound”. But the result is: silent :frowning:

Openhab log: No compatible audio format found for TTS ‘voicerss’ and sink ‘javasound’

I defined the default audio-system.

When I try to play any sound directly via putty with aplay XYZ.wav - it works fine.

solved via amazon API