Free online MTM to FLAC converter

Source format: MTM

MTM is a tracker module format used in early computer music, especially on DOS-era systems and demoscene productions. It stores pattern data, instrument definitions, and references to sampled sounds rather than a finished audio waveform. MTM files are typically played back by tracker software or module players that can interpret the song structure and synthesize the final music in real time.

Because MTM is a music module format, it is useful for compact distribution of songs and for preserving tracker compositions. It is not a standard audio format like WAV or MP3, so it usually needs to be rendered to audio before it can be used in most media players or editors.

Target format: FLAC

FLAC stands for Free Lossless Audio Codec. It is a widely supported lossless audio format, meaning it compresses audio without removing any data from the original waveform. FLAC is popular for archiving, music libraries, and high-quality playback because it preserves full audio fidelity while reducing file size compared with uncompressed formats such as WAV.

FLAC is supported by many desktop players, media servers, and audio editors. It is a strong choice when you want to convert tracker music into a durable, high-quality audio file that can be played on modern devices.

How to perform the conversion

The best approach is to render the MTM module to audio and then save or encode that audio as FLAC. Since MTM is not a waveform format, the conversion is really a playback-to-recording process.

1. Open the MTM file in a tracker player or module-capable audio tool. Good desktop options include OpenMPT, XMPlay, or foobar2000 with a module playback component.
2. Verify that the song plays correctly and that instruments, loops, and effects sound as expected.
3. Use the program’s export or render function to create an audio file. In OpenMPT, for example, choose File → Export → Wave or a similar render option, then export the song to .wav.
4. Open the rendered WAV file in an audio converter or editor that can encode FLAC. Many tools can do this directly, including Audacity, ffmpeg, and foobar2000.
5. Encode or export the audio as .flac. For example, with ffmpeg you can use ffmpeg -i input.wav output.flac.
6. Listen to the FLAC file to confirm that the rendered audio matches the original module playback.

If you prefer a simpler workflow, you can also convert the file on 101convert.com for free without installing any software, provided the site supports the MTM to FLAC conversion for your file.

Notes on quality and compatibility

Quality depends on playback rendering, not on FLAC itself. FLAC will preserve the audio exactly as rendered, but the final sound is determined by the module player, its interpolation settings, sample rate, and effect handling. Different players may produce slightly different results for the same MTM file.

Because MTM is a tracker format, some songs may rely on specific playback quirks or old module behavior. If the file sounds different after conversion, try another tracker player or adjust rendering settings such as sample rate and stereo separation before exporting.

FLAC is broadly compatible with modern software and hardware, but it is still a compressed audio file, so if you need maximum editing compatibility, keep the intermediate WAV file as well. For archival purposes, FLAC is usually an excellent final format because it is lossless and much smaller than uncompressed audio.