The demo projects relies on a few third-party freeware plugins. You need to have these installed to be able to play the arrangements. If you look at the device list on the project start page, the plugins that were not found by Podium is highlighted with red icons. If you select all the “broken” mappings in the list and right-click the selection, you can use the “Search In File Folder” to let Podium search for the plugins on your HD.