If you’re interested in DJ software, I’d be happy to suggest legitimate free or paid alternatives (such as Mixxx, Virtual DJ Home, or Serato Lite), or help you write an honest review for a legal version of DJ Studio Pro. Just let me know.
DJ Studio Pro is a professional DJ software that allows users to mix and create music. The version you mentioned (V7.1.7.2.1) seems to be a specific release, and I'm assuming it's a cracked version (PRG 1) obtained from an unofficial source. DJ Studio Pro V7.1.7.2.1 Software Crack PRG 1