Created by Daniel Feles, refreq is a customisable music player. You can load music files into refreq, but also images (bitmaps, imgs, pngs). When you load a song, first the program analyzes the track, then it draws its frequency spectrum. After tracking, you can generate the spectral image / bitmap back into music. Likewise, if you load an image, according to pixel value to application scans the image based on the line you can position anywhere on the screen. Simultaneously you can move the line while the content is being played producing some quite interesting variations.