@J.C. This might be possible, but I don't think that anyone in the team is willing to spend time on this. We are always open for patches though.

The development on VLC is mostly done by the principle "implement what you personally need". Most of us think that they don't need this, ergo they don't implement it.

Additionally, a media player isn't responsible to extract files automatically. That's the special field of a decompression-application in my opinion. If we were implementing complete rar-support, the next time people would ask us to implement zip-support, etc. pp. so we would end up with a huge app which can decrypt everything, although these features are used by very few people only, because most of our users download VLC to be able to play movies, not to decompress movies.