core/homeassistant/components/media_player/translations/cy.json

{
    "state": {
        "_": {
            "idle": "Segur",
            "off": "i ffwrdd",
            "on": "Ar",
            "paused": "Wedi rhewi",
            "playing": "Chwarae",
            "standby": "Gorffwys"
        }
    },
    "title": "Chwaraewr cyfryngau"
}