Many of the downloads our sellers offer are compressed in a ".ZIP" or ".RAR" format to reduce download times.

Depending upon your device, you can use one of the following unzip utilities to open it.

Free (PC) Zip files utility, free Rar files extractor
Open RAR TAR 7Z ZIP ZIPX file, 150+ formats supported

7zip (for Mac, PC or Linux) from here:

iZIP (For Mac) Free
iZip is the easiest way to manage ZIP, ZIPX, RAR, TAR, 7ZIP and other compressed files on your Mac.
Best of all it's completely free so you can zip, unzip & unrar your files without limitations!

RAR for Mac:

For iPhone/iPad users:

For Android users:
If you are downloading to a mobile device please download the utility before your file.

Finally, please ensure that the download is complete before opening the file.