ConvertWithMoss is a free, open-source multi-sample converter tool created by Jürgen Moßgraber. It runs as a standalone application and lets you convert multi-sample files between a huge variety of hardware and software sampler formats, including vintage Akai samplers and modern DAW environments. You can download ConvertWithMoss without sign-up from the official site, and it’s licensed as open-source software—fully royalty-free for personal and commercial use.
What Does ConvertWithMoss Do?
ConvertWithMoss reads and writes multi-sample formats for gear like Akai S5000/S6000, MPC series, Z4/Z8, and various software samplers. Version 16.5, released November 28, 2025, introduces expanded support for vintage Akai sample formats such as S5000/S6000 AKP/AKM, MPC XPJ/XTY, Z4/Z8/MPC4000 AKP/AKM, MESA (.s3p), and S1000/S3000 (.iso) images. Maschine (2 and 3) mxsnd export is also now supported, making it easy to bring legacy Kontakt or DecentSampler libraries into your workflow.
Key Features:
- Reads and writes a wide range of hardware/software sample formats
- Vintage Akai sampler file support (S-series, MPC, Z-series, MESA)
- Maschine mxsnd conversion for Native Instruments Maschine users
- Processing options: normalization, mono conversion, bit depth reduction, more
- New support for discoDSP Bliss and general UI improvements
- Standalone application, no DAW integration or plugin format required
System Requirements and Format Support
ConvertWithMoss is available for Windows and macOS. No installation or account is required—just download the latest version and start converting. The tool directly handles multi-sample folder structures and proprietary file types used by many major samplers. All conversions are non-destructive and maintain mapping/keyzone structure.
Supported sampler formats include:
- Akai S5000/S6000, S1000/S3000, MPC series (XPJ/XTY)
- Z4/Z8, MPC4000
- MESA (*.s3p)
- Maschine (mxsnd)
- discoDSP Bliss
- Kontakt, DecentSampler (input)
Licensing
ConvertWithMoss is fully open-source and royalty-free for any use, commercial or personal. There are no restrictions on the multi-samples you create or convert, other than those of your source material. There is no time limit or sign-up requirement to download.
Quick Facts: ConvertWithMoss is a free, open-source standalone sample conversion tool for Windows and macOS, supporting Akai vintage formats, Maschine, and more. Download is immediate and royalty-free from the developer's site.
Get ConvertWithMoss while it's current—open up vintage and modern sampler libraries with this flexible, free tool.
FAQ
Is ConvertWithMoss really free and open-source?
ConvertWithMoss is 100% free to download and use, released under an open-source license with no commercial restrictions.
What sampler formats does ConvertWithMoss support?
It supports Akai S5000/S6000, S1000/S3000 (.iso), MPC (XPJ/XTY), Z4/Z8, MESA, Maschine (mxsnd), discoDSP Bliss, and more.
Do I need to sign up or register to use ConvertWithMoss?
No sign-up or registration is required. Just download the tool directly from the developer’s official website.