We have implemented that sample Web part. You have two attached files, DocumentDownload-Release.zip
1. To start use it you need to unzip the Release
file into your MonoX root(Portal folder). That will add DocumentDownload.dll to your bin, create default template and default css(you need to copy css from DocumentDownload.css to your own css file).
2. This sample is set to work with default
theme so the page that will show that module needs to have theme set to default.(It can be changed, let us know if you need to use some other theme)
3. In Web.config file you need to add path for your module in order to use MonoX drag & drop feature.
<!-- path where all Web parts are stored (Comma separated values) -->
"/MonoX/ModuleGallery, /MonoX/Samples/WebPartSample, /YourFolderWhichContainSampleModule"
4. Open the page that holds Document download module, log in as an admin, go to DocumentModule properties and there you can set the file extension and folder from which the module will read the files.
Second approach would be to use DocumentDownload-Solution.zip file and add it to your project, so let us know if you want to use that approach.