To let someone know u have entered the room should a name be on the list , they may be lurking, use the sounds to alert the room u are here.
Type in...... /sound then the name of the sound.
The list follows:
bell, moo, computer, sci_fi, join, crash, cuckoo, door, drip, notice, train
scoping, whistle, flush, explosion, gong, cowbell, spacedoor, swish