personally i dont use anything, i have the network set to private on my laptop, file sharing is on, my music and videos are in music and video folder or store them on your desktop.
on the xbox go to my xbox, then scroll across to my music r my videos, you should see the name of your computer when you select my video or music, select it and it will search for folders containing any music or films you have stored on your computer according to the selection you have made.