I'm looking for a developer who can make a Wordpress plugin or simply provide the code in HTML-based format that I can paste into a Wordpress' HTML tab, that will allow a user viewing the page to drag an audio file (displayed on the page) on to a video clip (embedded in the page) so that the audio file becomes the sound track to the video. Please include the basic functionality to drag the audio file along the timeline of the video.
Then I can click play and the video clip plays with the audio file.
The audio file should translate into a waveform below the video. Then the waveform should be draggable along the timeline of the video.