Download ORBITVU VIEWER from Orbitvu SUN. Log in using credentials that you've received in a separate e-mail.
You don't have to download ORBITVU VIEWER if you're using ORBITVU SUN to host Orbitvu presentations (fully featured ORBITVU VIEWER version is automatically used in this case).
Go to My Products section and choose SOFTWARE, then scroll down to VIEWER section.
Select ORBITVU VIEWER version to download and click Download link
Proceed by clicking Download button