First, I'll outline general steps for software activation, assuming it's a legitimate product. But I need to make it clear if there are any red flags. Let me check if "Freemake Audio Converter Infinite Pack Key Full" is a real product. Searching online, it seems like Freemake has an official Audio Converter with a free and premium version. The "Infinite Pack Key Full" might be a misnomer or a term used by third parties for unauthorized access.