Add files that you want to convert it, select some additional settings like quality (it has pre-defined profiles for high, optimal, standard or economy quality). If you choose economy, files will be smaller and if you select high quality files will be a little larger.
Set the Output Directory where MP3 files will be saved. You have the option to shut down automatically application when is finishing the task.
Pros:Is working fast.
ConsIt does not have to many additional options.
For a freeware it makes small tasks quickly and with good quality.