Note: this stopped working when Spotify got rid of player extensions.

Skipper: A Spotify API Experiment

This is a Spotify App which takes a playlist that a user drags to it and then plays each song skipping right before the track is finished.

Installation

Sign up for a developer account on Spotify by logging in and agreeing to the terms of use.
Create the Spotify folder if it doesn't exist already: ~/Spotify (Mac OS X and Linux) or My Documents\Spotify (Windows).
Open the Spotify folder.
If you have git installed run git clone https://github.com/dropofwill/Skipper.git within this directory. If not, download the zip from 'https://github.com/dropofwill/Skipper' (currently the button is located in the right sidebar) and extract it to the Spotify folder.
Open Spotify and type "spotify:app:s" in the search bar (restart Spotify completely in case it doesn't find the App at first). This unfortunately has to be done everytime Spotify restarts.
Now just drag-and-drop a playlist into the designated field and enjoy.