How to mod my Old PC

Hey.
I have a new laptop and i have a old pc that i would like to use as storage, for movies music and such, is there a way when at home, to conncet my PC Through my router (or i can connect the two direectly thorugh etehrnet - like ethenet fom my laptop and one to the back of m pc) it has ethernet ports avalible and on the Pc it also has ethernet ports. If i did some how connect them, would I be able to sotre all my music on that pc but controll it from this one?
Like; I have a ipod so would i be able to sync the music from my laptop but store the files on the PC to save my Laptops HD?

Every comment is aperriciated Thanks, Andrish x