I need to make sure the tone is informative and helpful, not promoting piracy. Use SEO-friendly keywords like "Primo Ramdisk 5.6 reg key," "how to get a Primo Ramdisk license," "legal ways to obtain software keys," etc. Check for any outdated information about the software version. Since 5.6 is mentioned, confirm if there's a more recent version, but since the user asked for 5.6, focus on that.