Update the help text

Current 6.x help text:

Acidfree is an album system that has the ability to store any kind of media (assuming the class is existent.) Currently implemented are image, video, album. Following the example of one of the currently implemented classes, it is easy to create a new media type.
[more help...]

Because Acidfree is more than simply a storage and viewing module, it requires some depenencies for the album management. First, it requires some form of image manipulation. Drupal provides a frontend to the GD library that can do what is required. Or, if you would rather use ImageMagick or libmagick (php-imagick module), set that up (copy the image.*.inc files to the includes directory) and select it. Second, if you want lossless rotations for your images, you will require jpegtran or exiftran.

For video thumbnailing, there are three options. You can choose a static image for all your videos (no thumbnail), upload your own thumbnail (user thumbnail) or have mplayer thumbnail them automatically for you. If you choose the first option, you will be asked to give the dimensions of the video so it can be displayed correctly in the 'full' view. With option two, be sure to upload a thumbnail that is the same dimensions as the actual video (grab a frame from the video, do not resize it.) The third option obviously implies that you have mplayer and all the win32 codecs installed on your server and that you are allowed to exec other programs (i.e., not running in safe mode.).

Blocking for GA.