Thank you for the suggestion. I use Audacity frequently. It is a great program. For this particular task, however, it is cumbersome. MP3s must first be imported into the program and converted to its project format, cut points must be set manually (and in my case that usually means setting approximately 36 cut points), and each segment exported back to mp3 individually, and then saved. This process takes more than one hundred clicks, and can take around thirty minutes including import and export times.
In contrast, with a program like mp3splt, only around 5 clicks are needed, the file is never imported, exported, or converted, and the entire process takes around 20 seconds.
For this particular application, using Audacity is like using a chain saw to cut a tomato.