I've just bought a new machine. Can I transfer my license to use on the new system?

Yes, you can. You can also move existing license from your Windows machine to your Mac or Linux. It's fine as long as you keep only one copy of DVD Audio Extractor running for each copy of license you purchased.

All you need to do is install DVD Audio Extractor on the new system,  assign the machine ID of your new system to your license, and download the license file again to use it.