Multitrack is downloading the entire file even with peaks

[kkoshijima]

Hi @katspaugh . Thank you so much for creating wavesurfer. It's an amazing piece of software.

I am using wavesurfer-multitrack, trying to render waveforms immediately by giving it peaks and duration, but it is downloading the entire file before waveforms are rendered.

  const tracks: TrackOptions[] = useMemo(() => {
    return audioFiles
      .map((file, i) => {
        const url = file.url
        return {
          id: file.id,
          url: url,
          peaks: peaksMap[file.id]?.data, // Peaks HERE
          startPosition: 0,
          options: {
            waveColor: "#ec4899",
            progressColor: "#ec4899",
            duration: file.duration  // Duration HERE
          },
        } as TrackOptions
      })
      .filter(Boolean) as TrackOptions[]
  }, [audioFiles, peaksMap])

Is there anything that I am missing here?