Hi guys, following up the Airplay issue, I have some considerations which may help other users.
1. In previous posts I stated I couldn´t install Airplay in the 7005. Well, I contacted Marantz and they responded (within a couple hours) that they only needed the Id code that the installation screen displayed so they could update their database. So, I provided the code and they responded very quickly that I could finish the installation. No need to pay a dime.
2. Once installed, it is working like a charm. It took me about 2 minutes to figure out that the unit must be set to "Net" input so you can stream audio.
3. You cannot play video, only audio through air play. (Apple TV lets you stream audio and video).
4. In order to be able to play audio, the unit must be connected to the wifi net (of course), but since this unit doesn´t equip wireless wifi, if your router is far away from the unit, you will have to use a very long (and ugly) cable to connect the 7005.
In my case, and based on my needs, I think I will have to buy the Apple Tv, because I don´t want to connect a long cable everytime I want to use the Airplay.
Kind regards (and happy new year)