[Plugin: FeedWordPress] Problem with some characters

I found this great plugin, but unfortunately I’m experiencing a problem – I use it for syndicating RSS feed in Czech language and when it’s displayed as a post, it skips Czech characters (ěščřž etc.). Is it possible to solve this?

(The RSS feed I used: http://www.xboxweb.cz/hry/forza-motorsport-4/rss.xml )

Thank you,
Hofik