Only DynamicDotNetTwain.dll can be distributable with end user application. All other files and documentations can NOT be distributed.
YOU MUST NOT DISTRIBUTE DynamicDotNetTwain.lic.
Dynamic .NET TWAIN is very easy to distribute. Since Dynamic .NET TWAIN is developed based on Microsoft .NET Framework 2.0, which is required to be installed client machines, you only need to distribute DynamicDotNetTwain.dll with your application. No additional DLL is needed.
Please refer to the License Agreement for more info.