I have sold my software. How do I transfer the license registration to the buyer? Fredrik December 18, 2018 10:44 Updated Follow All things related to buying and selling used Propellerhead Software products can be found here. Comments 0 comments Article is closed for comments. Related articles Buying/selling used Propellerhead products Licenses and authorization – how does it work? How does the license number transfer process work? How do I register my product? I noticed a person selling illegal copies of Propellerhead Software products on Ebay. Who do I report this to?