This will depend heavily on what kind of audio content you're talking about and how you plan to drive awareness for it. Are you talking about a podcast, a heavy metal album, or an ASMR video of you eating ramen? They would all leverage very different platforms and monetization models.

I used to run Earbits, a streaming music service backed by Y Combinator and designed to help artists and labels monetize their music. There aren't that many great options out there, but if you want to talk through your specific situation, feel free to touch base.

It depends on what you are trying to monetize. Is this your own audio content or do you own the rights to it? I would need more information to give sound advice. Always be aware of copyright issues.