Classic - Play sound files like you did in Mac OS Classic, by double-clicking them.Play More - SystemSound plays: AIFF, AIFC, WAVE, MP3, MP2, MIDI, SD2, ULAW, WMA and system 7 sounds.Welcome and goodbye - Choose a sound for startup (or login) and shutdown (or restart and logout).Convert System 7 sounds - Welcome your classic sounds to the new world. Convert them to AIFF or WAVE.