There are a few things that might affect your Zip! speed, including your processor speed, how much RAM you have, what the running time of the title is, and whether you're Zipping to Windows Media or an iPod. Here are some general guidelines:
For PlaysForSure players: The title has to be transferred from the iofy format to Windows Media Player first (this can take a few hours). Then, the audiobook can be added to your PlaysForSure player using Windows Media Player's sync feature (syncing only takes about 10-15 minutes).
Our Q&A department suggests you watch a movie, go to the grocery store, or otherwise occupy yourself for a few hours after you start the Zip! process for Windows Media. Otherwise, watching the progress bar may bore you to tears.
For iPods: The Zip! process is much faster, taking only 20 minutes or so from start to finish. Unlike the PlaysForSure process, the conversion and syncing is done in one step.
If you don't want to sit and wait while the Zip! to iPod process takes place, you can always step away from the computer and enjoy a hot beverage of your choice (I prefer coffee, myself).