The program monitors the folders you choose, and when a file appears in selected folders, Background MP3 Encoder to work.
This can be useful if you access an audio CD or when your downloaded MP3 files must be resampled to another bitrate / samplerate. Maybe you want to automatically also an MP3 podcast when it is downloaded resample.
Background MP3 Encoder limitations:
What's new in the background MP3 Encoder: