add music readme

Author: JesusPaz

music/README.md

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+# Music Directory
+
+This directory is intended for storing music files for the Tagathon application.
+
+## Guidelines
+
+1. The music files should be in a format that is compatible with the application (e.g., `.mp3`).
+2. The names of the music files should match exactly with the names stored in the application's database. This is crucial for the correct functioning of the application.
+3. The music files should be free of any copyright restrictions, or should be used in accordance with their respective licenses.
+
+## Demo Song
+
+A demo song, "V.mp3", is included in this directory. This song is a shortened version of "V" by Raul Diaz Palomar, and is used for demonstration purposes.
+
+The song "V" by Raul Diaz Palomar is licensed under a Attribution-NonCommercial-NoDerivatives 4.0 International License. You can access the original song at the following link: [V by Raul Diaz Palomar](https://freemusicarchive.org/music/Raul_Diaz_Palomar/Maqbara/5_V/)
+
+Please note that the demo song has been renamed and its duration has been shortened to fit the demo requirements of the application.