No. The ShellBrowser components are royalty free. That means after you purchased them, you may distribute compiled projects without additional costs or fees.
When using our installer: In RAD Studio choose: Components > Install Packages > Add... > "%BDSCOMMONDIR%\BPL\JamShellBrowserDesign.bpl"
When using the ZIP file download (source code customers only): extract the ZIP file, open "Packages\RAD Studio XE*\JamShellBrowserDesign.dproj", right click on "JamShellBrowserDesign.bpl" in the Project Manager and choose "Install".
The path of ShellBrowser is missing in the library path of Delphi. You may need to add it manually under Tools / Environment Options / Library / Library Path.
The thumbnails are generated through the same Windows API function that the Windows Explorer uses, and so the ShellBrowser components will show similar thumbnails like the Windows Explorer. To provide thumbnails for a certain file format that Windows does not support out of the box, it is best to register a thumbnail provider in the system. Another option is to use the OnThumbnailUpdated event of the TJamShellList control, which allows you to change the generated thumbnail. TShellBrowser.SetThumbnailProvider() allows you to set one application-wide thumbnail provider that is called if the system does not supply one.