This prevents QUEUE_FLUSH from working as intented since
there is a (blocking) setLanguage() call that waits for
the previous synthesis to complete before flushing the queue.
bug:5288327
Change-Id: I00467f0ac1584863ae27bfc076b8413e29e5379b
This makes the sample play faster, and results in a reliable
return value from getLanguage().
bug:5207139
Change-Id: Ic6ca4a2f4aed299d35c320ecc3f327579c66471b