I suspect that if we took a poll of all 1000+ Renderosity merchants, we'd find that most would be okay with passing on software or files if they were honestly TRULY not being used anymore by the original purchaser. However, everyone who buys anything from Renderosity must first change the "I DO NOT AGREE" to "I AGREE" in the licence box on the order page in order to download any product, so it should be assumed FIRST, simply because it is stipulated in the licence agreement, that it is NOT okay to pass it on. If you want to pass it on, I would suggest contacting the merchant--whose contact information is required to be in the ZIP file, so if you have the original zip, you have the contact information--and ask. Probably nine times out of ten, the merchant will say "Sure! Thanks for letting me know."