Media Player is an addon for Garry's Mod which features several media streaming services able to be played synchronously in multiplayer.
Place the contents of this GitHub repository into a new addon folder within your garrysmod/addons/ directory. For those unfamiliar with Git, press the Download ZIP button in the right-hand sidebar.
If you'd only like to use the addon and not modify the source code, you can subscribe to the item on Steam Workshop:
