OTape

oTAPE is an open file format for digital cassettes that stores a whole tape, including the label, J-card, and record tabs, in a self-contained file that can be played offline. The file format preserves the experience of making a mixtape, with each side being a continuous take and track markers that can name songs without splitting the side. The format is based on a ZIP archive with a JSON manifest, AAC audio, and PNG or JPEG artwork, and can be played with existing tools.