Capturing audio and deriving real-time insights from customer interactions can be achieved using Twilio Media Streams and Symbl's WebSocket API. To get started, developers need to set up a local server that can handle WebSocket connections, connect their Twilio number to the server, and configure the server to stream media packets from the call to the Symbl server. This is done by creating an HTTP route that returns TwiML instructing Twilio to stream audio to the server. Once the server is set up, developers can use ngrok to expose the port to the internet, navigate to their Twilio Studio Dashboard, and create a new flow to join Symbl to customer and agent conversations. The integration allows for real-time insights to be generated from the conversation, which can be fetched using the Symbl API and pushed to downstream channels such as Trello or Slack.