Fixed typos

Ignore-this: 76715d6ed8d89d65957654177751c12d

darcs-hash:20130917160848-56b4d-5632d5d45d180a8491f11a6ded60a0c295ed038c
Reduced indentation

Ignore-this: 111fc37e4b6f0df84aeae5dd278a266

darcs-hash:20130917160925-56b4d-6c827b4cd0688beb0f58ecdcc9394d061e437710
Reuse sound device pool

Ignore-this: 1fb6c281deb7c6f823c8cf28cbd4ee2d

darcs-hash:20130917170818-56b4d-3b1e59218d64381b669302408713cbae9dc07061