I’m not able to extract article text from that URL because it points to an MP3 audio file, not an HTML article page.
To proceed in a way that matches your request (title as H1 and core article text in markdown), I would need a URL that serves a web page with written content rather than an audio file. If you have a corresponding article page for this audio (often radio sites have a “text” or “article” view linked near the audio), share that URL and I can extract the core text in markdown as requested.
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