GMote per a control remot
Gmote turns Android into a remote control for a computer, allowing users to run movies and music at a distance. It supports all of the standard remote control features such as play, pause, rewind, volume controls etc. It also has a built-in file browser that lets you select what to play.
Considering the app connects to your computer wirelessly, both the phone and the computer need to be connected to the same network. The app will list out all the computers on the network with the software installed and make it easy for you to connect.