Nero Showtime won't play MP3's

I just downloaded Nero 7.0.14b. I did uninstall nero6 1st and then used Nero clean tool fo finish before installing v7. Works well, but just one problem. Showtime won’t play MP3s. It just sits there locked up. I have Musicmatch, Winamp and Windows Media Player all working well with mp3s. Showtime worked well in nero6 with mp3s. Is there some way to fix this ?