API PlayMusic

Plays the specified sound file on loop to the "Music" sound channel.
 willPlay = PlayMusic(musicfile or fileDataID)
==Arguments==
:;musicfile: - Path to a custom .ogg or .mp3 file from an addon. The file must exist prior to logging in to WoW.
:;or fileDataID: - FileDataID of the sound file.
==Returns==
:;willPlay: - Seems to always return true even for invalid file paths or FileDataIDs.
==Example==
Plays Stormstout Brew from the Mists of Pandaria Soundtrack
 -- by file path (dropped in 8.2.0)
 PlayMusic("sound/music/pandaria/mus_50_toast_b_03.mp3")
 -- by FileDataID 642878 (added support in 8.2.0)
 PlayMusic(642878)
==Details==
* If any of the built-in music is playing when you call this function (e.g. Stormwind background music), it will fade out.
* The playback loops until it is stopped with (), when the user interface is reloaded, or upon logout. Playing a different sound file will also cause the current song to stop playing. It cannot be paused.
* OggVorbis (.ogg) files are supported since World of Warcraft uses the FMOD sound engine.
* You can find a full list here: https://wow.tools/files/#search=sound/music
==Patch changes==