Hey,
(and if anyone knows who to contact at Google and Oracle's VBox team respectively, that'd be great -- I tried contacting the Music Manager team but the email listed in the RPM bounces, and the support reps that respond through official channels don't even know what Linux is, they sent me screenshot-grabbing instructions for Windows and Mac...)
the vbox team is reachable via mailing list see [1] or via freenode in #vbox-dev. You can also contact me if you are unable to reach them.
Regards, Sebastian [1] - https://www.virtualbox.org/mailman/listinfo/vbox-dev -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel