Still sealed in original CD Studio Pro:Windows System Requirements: Windows Vista, XP, 2000, MeMacintosh System Requirements: Mac OS & Identities:Windows System Requirements: Windows 95Macintosh System Requirements: Mac OS 2000:Windows System Requirements: Windows 95Macintosh System Requirements: Mac OS 9.2-10.4Note: This is old software.(If Able To Run On Windows) We recommend using this on Windows Computers due to the \"ability\" to be compatible with newer versions of windows. Windows computers tend to let older software such as this work with there OS. It may or may not work with your device due to how old the software is, but the chance of it working with a Windows Computer are probable. We will not accept a refund if you buy this software and it ends up not being compatible with a version of Windows or Mac OS NOT listed here.