DLNA may be the ticket in theory but I would not buy stuff assuming that any two advertised DLNA devices will inter-operate properly. Vendors will usually tell you which devices theirs are certified to work with.
Also I am not sure that Apple is a supporter of DLNA, which I think is run by a consortium of major companies that Apple is not part of.
Also I am not sure that Apple is a supporter of DLNA, which I think is run by a consortium of major companies that Apple is not part of.