The application requires Flash Lite 2 or greater. That is the version that ships with S60 3rd Edition Feature Pack 1 phones such as the Nokia N92, 6110, 6120, 6290 and E90. If you have an older phone you can download the Flash Lite run time from the Adobe website here (look for the Flash Lite 2 for Symbian download link, free registration required).
Despite the above, given that Finnish is a difficult language to learn, you may want to consider memorising the phrase - Anteeksi, en puhu suomea!