Zoom for audio scrubbing + wider (taller) waveforms

Right now, this is one of the only tools I've found for remotely hosting, serving + transcoding, and sharing audio with a convenient visualization of the waveform.

My use cases usually involve very long audio files, and precisely scrubbing through or playing back the audio becomes basically impossible for e.g. 1-2 hr files. These files often have relatively low overall amplitude as well, so I boost them with the audio equalizer -- but the playback still shows a very faint/thin waveform.

I'd be very glad to see a feature allowing the waveform to be adjusted with the equalizer settings or to be normalized in width to be easier to see. I'd also be eager to have an option of zooming in on the audio timeline to allow more precise scrubbing/navigation.