To include videos in your albums you will need the 6.x-4.x version of the Video module which also requires the CCK and Filefield modules. Older versions aren't compatible with the 6.x version of Acidfree Albums. You can find detailed instructions for configuring the Video module at Heidisoft.com.
When you install these modules, be sure to enable the Content Copy extension (part of CCK) and the VideoFTP extension.
Next, import this content type: Video. This new content type is designed to allow you to view videos that have been previously uploaded to a directory via FTP or similar. You will still need to edit the field_video settings to set the path for new videos and to provide a default thumbnail. A sample thumbnail can be found the art directory of the Acidfree module.
Once installed properly, video nodes can be treated exactly like image nodes - they can be put into one or more albums, and they can be embedded using the acidfree input filter.