Level 10

Url: http://ctf.infosecinstitute.com/levelten.php
Description: What kind of sound is this? Sorcery Perhaps? – Flag.wav
Bounty: $100

Solution:
The file is wav audio files, after research for awhile I open the file with audacity program than set the Playback speed to 0.11x, I got the flag

level10

The flag is: infosec_flagis_found

Reference and Tools:
1. Wav Wiki – http://en.wikipedia.org/wiki/WAV
2. Audacity – http://audacity.sourceforge.net/

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