You create two buffers. Loading a source audio to the first buffer. Playing this buffer (I mean, the sound should be audible in the room). In the same time you are recording the sound (mic->adc->[second buffer]). Now you are repeating the procedure, but playing second buffer and overwriting the content of the first buffer. You repeat the procedure again (each time playing the last recorded buffer). With each repetition, the acoustic parameters of the room affect some frequencies.
Staying "inside" computer and using filters... it seems to me to act in the opposite to Lucier's assumptions..