Playback involves exactly three things: a player application, a device to run it on, and a network path between them. When something fails, one of the three is at fault, and the useful skill is working out which without changing all three at once.
This section is the navigation point for the other two. If you are trying to choose software, start with the directory. If you already know what you want to run and are deciding where, start with the platform pages.
Player software
Platforms
Streaming hardware
When choosing between platforms, security is worth weighing alongside features. A platform that only installs applications from one store cannot deliver an unofficial build, which removes the most common route to malicious software. See legal and safety guidance before installing anything from a link you found through a search.