医理真传音频播放器

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<div style="margin-top:12px;display:flex;gap:10px;flex-wrap:wrap;">
  <button id="btnPrev" style="padding:10px 12px;cursor:pointer;background:#48505e;color:#fff;border:none;border-radius:6px;font-size:15px;">上一首</button>
  <button id="btnNext" style="padding:10px 12px;cursor:pointer;background:#48505e;color:#fff;border:none;border-radius:6px;font-size:15px;">下一首</button>
  <button id="btnLoop" style="padding:10px 12px;cursor:pointer;background:#2563eb;color:#fff;border:none;border-radius:6px;font-size:15px;">循环: 关</button>
  <button id="btnRandom" style="padding:10px 12px;cursor:pointer;background:#2563eb;color:#fff;border:none;border-radius:6px;font-size:15px;">随机: 关</button>
</div>