The Theremini Editor / Librarian for iPad can be downloaded for free from the app store.
To receive the free desktop Theremini Editor & Librarian you must register your instrument at www.moogmusic.com/register. From there you will be prompted to sign or create an account before registering your instrument.
After you have registered your instrument, you will receive an email with the download link for the software editor/librarian. The download will also be instantly available from your account page.
If you have any troubles registering or installing your editor please contact us at firstname.lastname@example.org.