The iBook (Dual USB) has a built-in microphone you can use to record sounds. Follow these steps:
1. Open the Sound control panel. (See Figure 1.)
Figure 1 Sound control panel
2. Click the Input tab. Click Built-In Mic to select it as the input source. (See Figure 2.)
Figure 2 Sound input source
3. Click the Alerts tab.
4. Click New Sound. The Record New Sound window appears. (See Figure 3.)
Figure 3 Record New Sound window
5. Record and save your sound using the controls in the Record New Sound window.