Does exactly what I wanted it to do,

I really like Speed-Up! Like rvncto said, it is not a separate app, it adds additional features to iTunes, and that’s exactly what I was looking for. I want my podcasts and audiobooks on my Mac’s iTunes to sync with my IOS devices while being able to play them at higher speeds.

I heard a small amount of choppiness at 2.0x, but I didnt hear it at 1.75x. Using Preferences for Speed-Up, it allows you to select any speeds, from .25x to 3.0x to show up on the drop down menu. Also, it lets you select either, Podcasts, Music & Audiobooks, or both, in the Preferences. It also lets you to reset playback speed, or not, when you change songs.

To me, Speed-Up does everything it says it does, and more.

Mac1234 about Speed-Up for iTunes