sgw to mp3 conversion describes the export of packaged songs prepared using the n-Track Studio (.sgw files) to MP3 format.
According to the software's FAQ, this can be done simply by using the File ► Save as.. function in n-Track Studio. The software uses a third-party mp3 encoder called Lame Encoder.
We do not have information about any third party software that can be otherwise used for this, so using n-Track is your only remaining option in this scenario.
Updated: February 22, 2024