Gert,

I'm glad to hear that you got the sound clips to work. To get a keypress for each of these soundclips, you could insert a blank stim cell (by putting just ~ in the stim cell) next to each of the soundclips and then use a fixed response window in conjuciton with the MinMax field of your styles.drt file (see here in the DirectRT manual for more information: http://empirisoft.com/directrt/help/..._rt_limits.htm)