Catalogs can include records for as many different asset types as you like. But you may find it best to have different asset formats cataloged independently. For example, it might not make sense to have your image assets in the same catalog as your audio clips, though it is possible.
On the other hand, don’t limit the scope of each catalog too much. For example, when you’re looking for an image to be used on a Web page, do you care if it’s in GIF or JPEG format? Separating similar asset types by specific file format can be inconvenient when searching. Cumulus cannot search through catalogs that aren’t open. If each of your image file formats has its own catalog, they’ll all have to be open if you want to search through all of them. Remember, you can use Cumulus’ categories or built-in information fields to find files based on format, projects in which they were used, or status, for example.