Default Galaxy a part of network as other computers

Hey.
I have a Samsung Galaxy S3 which is not in use anymore. My plan is to use it as a music / podcast player in my workshop.
Can be installed a program that makes the Samsung Galaxy S3 will be part of my network and could be accessed via the network without the Galaxy S3 have to be connected to my computer's USB port with cable.
My wish is to be able to remotely control the Galaxy S3 and copy/delete music onto the phone and SDcard via the network.
I have tried TeamViewer, but I have trouble logging on Galaxy S3 from my desktop computer