Does gta online support user uploaded audio files?

The only source provided is a Wikipedia article about the development of Grand Theft Auto V, which describes the game's production and release dates but does not mention any multiplayer features or user‑generated content. Because the article contains no reference to audio uploads or custom soundtracks in GTA Online, we cannot confirm that such functionality exists. In the absence of evidence, the safest conclusion is that there is no documented support for user‑uploaded audio files in GTA Online.