And, to comply with the EULA,
You may install and use the “IK Multimedia Product”, or any prior version thereof for the same operating system, on up to three (3) computers, provided that
(a) each computer is owned by (or leased to) and under the exclusive control of the licensee;
(b) the program(s) shall NOT be used simultaneously on more than one machine, and
(c) any computer(s) with IK Multimedia software installed shall not be sold, rented, leased, loaned or otherwise be removed from the licensee’s possession without first removing (uninstalling) the licensed software, except as provided in Paragraph
4 (below) pertaining to “Software Transfer”.
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Oops somehow I removed your original question
It was along the lines of "I have AmpliTube installed and Authorized on my Mac. Soon I will be getting a Windows PC. Can I use the same AmpliTube Serial Number to Authorise it?
Sorry