I used to have an old iMac, running Mac OS 9.2. If I wanted to hear what I plugged in the audio input, I went to audio settings and clicked on "play through". Now I have an eMac running Panther (10.3.4) and in audio settings, the option play through doesn't exist. By adjustin the volume, I can see there's something coming in. How can I hear what I plug into the audio input? I used to plug a minidisc and listened to it through the mac speakers. How can I do this with Panther?