.ACD-ZIP File Extension

Audio project created by Sony ACID Xpress, Music Studio, or Pro; saved in a .ZIP format and contains an .ACD project file as well as the music compilation audio files; differs from an ACD file, which only stores references to the audio files.

ACD-ZIP files are used for saving and loading audio projects and all related asset files. Since they are stored in a Zip format, you can view the compressed files manually by renaming the extension to ".zip" and opening the file with a Zip utility.