Add LICENSE (CC BY-NC 4.0)

LICENSE

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+Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
+===========================================================
+
+The model weights redistributed in this repository (model.safetensors and
+config.json) are the MuScriptor medium weights by Kyutai:
+
+    Upstream: https://huggingface.co/MuScriptor/muscriptor-medium
+    Project:  https://github.com/kyutai-labs/muscriptor
+
+They are licensed under the Creative Commons Attribution-NonCommercial 4.0
+International License (CC BY-NC 4.0).
+
+You are free to:
+
+  * Share — copy and redistribute the material in any medium or format
+  * Adapt — remix, transform, and build upon the material
+
+Under the following terms:
+
+  * Attribution — You must give appropriate credit, provide a link to the
+    license, and indicate if changes were made. You may do so in any
+    reasonable manner, but not in any way that suggests the licensor
+    endorses you or your use.
+  * NonCommercial — You may not use the material for commercial purposes.
+  * No additional restrictions — You may not apply legal terms or
+    technological measures that legally restrict others from doing anything
+    the license permits.
+
+Full legal text: https://creativecommons.org/licenses/by-nc/4.0/legalcode
+Human-readable summary: https://creativecommons.org/licenses/by-nc/4.0/
+
+This mirror redistributes the weights unchanged, for the free
+non-commercial Egystormy Tools project, under the terms above.