Nero 7 hangs when reading large mp3 files

I have been burning large mp3 files with Nero 6 and never experienced any crashes but now Nero 7 hangs when I load large mp3 files. Does anyone know why its crashing and how I can fix it?

are you burning cue files? If yes, then you have to wait for 2 min. The program is not hanging, it only looks like.