You can set ACDSee as the default program to open a huge variety of file types when you double-click them. To Set File Association Options in ACDSee:
- In Manage or View mode, click Tools | File Association Settings.
- In the four format sections, select the checkboxes of the file formats you would like to associate with ACDSee for image formats, RAW formats, media formats, and archive formats.
- Click Save.