Odds and Ends
Problem: You select Alex to speak with, and all you get is your default voice. Are you using Tiger? Thought so. Verbalize doesn't come with voices, it merely speaks with the ones your computer has. Since only Leopard and later has Alex, Tiger falls back to your default (probably Vicki). If you type in a voice name incorrectly, Verbalize falls back to your default as well.
If you want to change the sound quality of your audiobooks, you can tell iTunes beforehand how you want them imported. Go to iTunes :: Preferences :: General :: Import Settings. Select Import Using AAC Encoder and change the quality in the Setting menu. Spoken Podcast is a good choice. If you set this before audiobooking, the chapters will come in pre-done at the desired quality. On the other hand, if you changed this setting afterward, there will be no effect.
Adding (or removing) emphasis from certain words is easy. To emphasize a word, place the cursor immediately before the word (no space) and type option-6. You'll see something like this: an §emphasized word. Similarly, to keep Verbalize from erroneously stressing an unimportant word, type an option-5 (∞) before it.
There are numerous easter eggs hidden within Verbalize, and it's up to you to find them. To get you started, try speaking bag.