Free online SGU to MP3 converter

Phones, web players, and audio editors generally cannot play a Band-in-a-Box arrangement directly. Converting it to MP3 renders the arrangement as an audio track for playback or sharing.

What the SGU format is

SGU is a Band-in-a-Box song file containing arrangement instructions such as chords, song form, tempo, key, and style—not a finished audio recording. An SGU file generally has no melody track; the related MGU format can include one. Playback may depend on Band-in-a-Box styles, RealTracks, RealDrums, or other installed sound resources. Changing the file extension does not convert it.

What the MP3 format is

MP3 is a lossy compressed audio format supported by most phones, computers, media players, and audio editors. It makes smaller files than uncompressed formats such as WAV, but encoding discards some audio information. WAV is preferable for editing or an uncompressed copy.

How to convert SGU to MP3

Online on 101convert.com

1. Upload the SGU file on this page. You can add several files for batch conversion; the page shows the per-file size limit.
2. Set the desired bitrate before converting.
3. Start the conversion, then download the MP3 file.

The conversion runs on the server with MuseScore.

Offline with desktop software

Band-in-a-Box (Windows and macOS) can open the arrangement and render it as audio. Open the SGU file, check that the style and sound resources are available, then use File → Render Song to Audio File or the equivalent render command in your version. Choose MP3 if it is offered and set the bitrate. Export options and menu names vary by version.

If your version renders only WAV, save the rendered audio and encode it with FFmpeg, which converts the WAV rather than opening the SGU:

ffmpeg -i rendered.wav -c:a libmp3lame -b:a 256k output.mp3

The result is a newly rendered performance, not audio extracted from the SGU. Its sound depends on the arrangement settings and available styles and instruments; missing resources can change the playback. A higher MP3 bitrate generally reduces encoding loss but increases file size. Keep the SGU and any required Band-in-a-Box resources if you may need to recreate the arrangement.