Allows you to see the song you're playing as a waveform and seek in it by clicking.
I.e. you can always skip to the drop.
With skin support:
Use Visual Studio 2010, and get the latest(!!!) Winamp SDK from here: https://getwinamp.com/wacup/sdk/
Get the latest installer from https://getwinamp.com/wacup/plugins/waveform_seeker/ or from the releases section.