User-agent: * 
Disallow: /*.xls$
Disallow: /*.doc$
Disallow: /*.mdb$
Disallow: /*.rar$
Disallow: /*.mp3$
Disallow: /*.mpg$
Disallow: /*.wmv$
Disallow: /*.wma$
Disallow: /*.xlsx$
Disallow: /*.docx$
Disallow: /*.zip$
Disallow: /*.7z$