Audio Record and Editor in Java Script

Source code and demo Links: Record feature: [login to view URL] Sound Wave feature : [login to view URL] Source code is available in github. But I need the below features. Same track record option : From the example ([login to view URL]) Each time when we hit the record audio, a new track (wave form) is added as a last track. But We need the multiple recordings in the same track (with the wave form). That is users may record many audios (in different chosen time) and from the UI level, those recorded tracks need to appear on single track. Move/Trim particular wave bit in a track: For a single recording, we would like to trim the empty spaces between audio data. We would also like to select and trim sounds like click, unwanted noise in the track Zoom in / out issue: If the audio is long, Seconds in the zoom out is not working. The time scale on the top need to be shown all the time Audio Cursor movement: While recording or playing the audio cursor needs to move along with the current playback time. For example if UI shows 1 to 10 secs view and the current playback time is 11 secs, we need to scroll the time to 11th secs