Il suffit de regarder sur le site de VirtualBox pour voir où se situe le problème pour l'Extension Pack (à ne pas confondre avec les Guest Additions):
https://www.virtualbox.org/wiki/Licensing_FAQ
Can I redistribute the VirtualBox binaries?
No. The Personal Use and Evaluation License allows you to download the VirtualBox binaries for personal and academic use and for evaluation, but it does not give you the right to redistribute these binaries. So you may not put them onto your own websites or other mirrors. We do this because we would presently like to keep track of how many people are downloading these binaries.
The no-distribution restriction does not apply to the Open Source Edition (OSE), as the GPL does, of course, permit redistribution of source and binaries, provided that you adhere to the other terms and conditions of the GPL.
Note that starting with VirtualBox 4.0 the base package is released under terms and conditions of the GPL, and the separately downloadable extension pack which contains a few closed source features is released under the Personal Use and Evaluation License.
Légalement, RPMfusion ne peut donc pas redistribuer le support USB qui est inclus dans l'Extension Pack...
En revanche je ne sais pas si l'Extension Pack peut s'installer en complément de la version de VirtualBox disponible sur RPMfusion... Quelqu'un a-t-il testé ?
