I use VoiceAttack with iRacing, and use a headset for voice chat and important information, while any game audio goes to a separate set of speakers. However, I have the speakers as the default audio device, which means that the TTS output from my commands is sent there. I'd like to be able to set a device in VoiceAttack myself, and have all audio it produces go there, rather than to the speakers where it's somewhat lost in the engine noise.
EDIT by Pfeil: Individual TTS actions can be set to output to a given device, and the "Override Default Text-to-Speech Device" option can be used for all TTS actions that are set to use the default device.