so what advantages are there, that using the juice box lite App gives me over using Jalbum ?.
They are simply different ways of creating a Juicebox gallery. There are also plugins available for other programs such as Lightroom, Picasa and Photoshop. Use whichever method you are most comfortable with. Some people already use programs such as Lightroom so having a plugin for Lightroom fits in well with their current workflow.
For those not currently familiar with Lightroom, Photoshop, etc. a plugin is of little use which is why we provide JuiceboxBuilder-Lite (a standalone application dedicated to creating and editing Juicebox-Lite galleries) with the Juicebox-Lite download.
The jAlbum skin has the ability to create multi-gallery albums in a single action (by dragging and dropping an entire folder structure into jAlbum's main window). A Juicebox gallery will be created for each folder/subfolder in your input structure and all the galleries will be linked together by the JavaScript navigation tree. You can also upload the resulting album directly to your web space via jAlbum's built-in FTP functionality.
If you were to purchase Juicebox-Pro, you would gain access to the many Pro Configuration Options which are not available to Juicebox-Lite users and the 50-image per gallery limit would be lifted. Other benefits of Juicebox-Pro over Juicebox-Lite can be found on this page.
You could integrate Juicebox-Pro into the jAlbum skin by following the instructions on this page. Pro Options should be entered into the skin's interface as lines of text, such as:
option1=value1
option2=value2
As a Juicebox-Pro customer, you will also have JuiceboxBuilder-Pro which allows you to create a Juicebox-Pro gallery with all available Pro Options configurable via the interface (without the need to type or copy/paste text). The live preview window also shows you exactly how your gallery looks as you make changes.