Using WIFI to transfer file on Sony Xperia ZL phone media server

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I use my phone usb cable to transfer file from phone to computer and computer to phone but at my home, both are connected to wifi home network. I just found that my phone has option to enable media server to transfer file over wifi. I turned it on, it says now you are connected network and media server is ready. But from where I transfer files, I see no option in computer, what is next step, am I required to do any special steps to access files over WIFI from phone to PC ?