Great question! There are absolutely managed services and APIs that align with all your requirements—no self-hosted infrastructure to maintain, no Flash, no full software installs, and browser-based audio capture that feeds a live stream to other pages on your site. Here are your top options:

1. Twilio Live Audio Streams #

Twilio’s Live API makes this straightforward. Broadcasters only need a modern browser (Chrome, Firefox, Safari, Edge) that supports the MediaDevices API—no plugins required. When they click your custom button, you’ll use Twilio’s JavaScript SDK to capture their microphone audio via navigator.mediaDevices.getUserMedia(), then send that stream to Twilio’s cloud infrastructure.

Twilio handles all the heavy lifting: transcoding the audio into streamable formats (like HLS) and hosting the stream for your other pages. On the viewer side, you can embed Twilio’s player SDK directly into your webpage or pull the HLS URL into a standard HTML5 audio player. It’s pay-as-you-go, so you only pay for what you use, and you have full control over the button’s UI to match your site’s design.

2. Mux Live Streaming #

Mux is a fully managed video/audio streaming platform that works perfectly for pure-audio use cases. Their Web SDK lets you build a custom "start broadcast" button in your private page: when clicked, it captures the user’s audio in the browser, sends it to Mux, which then transcodes and distributes it as an HLS or DASH stream.

You don’t need to worry about servers, scaling, or stream maintenance—Mux takes care of all that. Viewers on your other pages can play the stream using any HLS-compatible player (like the native HTML5 audio element with an HLS plugin, or Mux’s own player). Pricing is based on bandwidth and streaming minutes, with a free tier to test things out.

3. Agora Web SDK (Audio-Only Mode) #

Agora is known for low-latency real-time communication, and their Web SDK supports audio-only live broadcasting. Your broadcast button will trigger Agora’s SDK to capture the user’s microphone via WebRTC, then send the stream to Agora’s global network.

Viewers can access the stream on your other pages using Agora’s player component, which you can embed seamlessly. No plugins or software installs are needed for either broadcasters or viewers—just modern browsers. They offer a free tier for small-scale use, with paid plans scaling up for more concurrent listeners.

4. Daily.co Audio Broadcasts #

Daily.co simplifies browser-based audio streaming with their easy-to-integrate Web SDK. You can add a "start audio broadcast" button to your private page; when clicked, it creates a live audio room hosted by Daily.co. Broadcasters join directly in the browser (no installs), and viewers can listen on your other pages via an embedded player or a custom link.

Daily.co handles all the infrastructure, and you can fully customize the button and player UI to fit your site. They have a free tier for limited use, with paid plans offering more features like custom domains and higher concurrent user limits.

Key Notes #

• All these services rely on modern browser APIs (MediaDevices/WebRTC), so make sure your users are on up-to-date browsers (no IE support, which is standard now).
• Your private pages must use HTTPS (localhost is exempt for development) because browsers require secure contexts to access microphone hardware.

内容的提问来源于stack exchange，提问作者MastaBaba