Du kan ikke få den på Dansk men du kan lægge en Dansk "language pack" ind i programmets sprogmappe.
The language pack and skin pack contain several language files & skins for Rainlendar. Note that there is no installation script in the language pack, so you need to uncompress the packages to the correct place. The languages go in the Rainlendar's Languages-folder and the skins into the Skins-folder (not that hard, eh?)