Serial Pcdj Red 5.2 Build 1023 Lost Cd For PCDJ Red. Can I Download This?

Lost cd for PCDJ red. can I download this? - serial pcdj red 5.2 build 1023

PCDJ Red renewed, I bought five years ago and recently my computer. I still have the serial number, but not the CD for download. Am I obligated to buy the program again or there is a way to download what's on the CD? Thank you!