Accents in iPeng

I have iPeng 9 for LMS 7.9. I listen mostly to classical music so lots of composers and compositions with accents in them. For example

Jan Václav Hugo Voříšek comes out as Jan VÃiclav Hugoȉ VoÅÃÅƐİek

The word "Frühling" comes out as "Früling"

Is there a way to fix this? There will be thousands of other examples throughout my catalogue.