You should probably do something about that WAV file by the way, it's way too large. If you re-encode it using Unsigned 8-bit PCM instead of Signed 16-bit PCM which its currently using, you'll half the file size and keep decent audio quality (1024kbps -> 512kbps). You can do this using Audacity, just import the original WAV, then use the Export feature and select Other uncompressed formats and then choose Options. Select WAV (Microsoft) and Unsigned 8-bit PCM. You may also want to experiment with IMA ADPCM or Microsoft ADPCM.