"farm_boy-win32-x64.7z" (If you are spelling out the letters: "ef-ay-ar-em..." )
"farm_boy-win32-x64.7z" (If you pronounce it as the word "farm" ) farm_boy-win32-x64.7z
While the name starts with the letter "f," the grammatical rule for choosing between "a" and "an" depends on the of the first letter. In English, the letter "f" is pronounced starting with a vowel sound ( "ef" ). "farm_boy-win32-x64