As mentioned in the game description, this riddle is solvable with free software! And free software does not necessarily mean bad software. Au contraire! Support free software, because the makers design the software for the users and not for economical profit!

For manipulation of pictures use: GIMP or the PHOTOSHOP tryout
For manipulation of soundfiles use: AUDACITY
Free Office Software: OPEN OFFICE
PDF-Reader: FoxIt Reader
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