[pvagner]

He wanted to know if we could output the sound via XBMC. I told him yes, but playSFX() was the only viable option, and not that viable because you can't interrupt it. He said he wanted to talk with amet to see what could be done. After a bit, he had amet join the channel to explain what was needed. In the end I asked how hard it would be to add an option to stop the playSFX() audio. A few minutes later he sent me a patch via pastebin with stopSFX() added. I'm off to build XBMC from source for the first time and try it out.

Yeah awesome!
Still I think we will have to rework our TTSBackends to fully take advantage of this plus we might consider adding an option regarding output device selection.
For example on my HTPC I am using speech-dispatcher for TTS output and I do have dedicated soundcard with dedicated headphones for listening to that output so speech synthesis will not talk over the playing media through the main speakers.
Most likelly I'll try building this my-self on arch linux in upcoming days.
On smal devices like those powered by openelec playing through XBMC audio chain is an advantage.