diff --git a/frontend/public/n-spheres/attractor.flac b/frontend/public/n-spheres/attractor.flac
deleted file mode 100644
index c7cfc25..0000000
Binary files a/frontend/public/n-spheres/attractor.flac and /dev/null differ
diff --git a/frontend/public/n-spheres/attractor.mp3 b/frontend/public/n-spheres/attractor.mp3
new file mode 100644
index 0000000..f9e73dc
Binary files /dev/null and b/frontend/public/n-spheres/attractor.mp3 differ
diff --git a/frontend/public/n-spheres/core.flac b/frontend/public/n-spheres/core.flac
deleted file mode 100644
index c10f37e..0000000
Binary files a/frontend/public/n-spheres/core.flac and /dev/null differ
diff --git a/frontend/public/n-spheres/core.mp3 b/frontend/public/n-spheres/core.mp3
new file mode 100644
index 0000000..bd3befb
Binary files /dev/null and b/frontend/public/n-spheres/core.mp3 differ
diff --git a/frontend/public/n-spheres/flux.flac b/frontend/public/n-spheres/flux.flac
deleted file mode 100644
index 958b96c..0000000
Binary files a/frontend/public/n-spheres/flux.flac and /dev/null differ
diff --git a/frontend/public/n-spheres/flux.mp3 b/frontend/public/n-spheres/flux.mp3
new file mode 100644
index 0000000..267da0f
Binary files /dev/null and b/frontend/public/n-spheres/flux.mp3 differ
diff --git a/frontend/public/n-spheres/function.flac b/frontend/public/n-spheres/function.flac
deleted file mode 100644
index d7b4b74..0000000
Binary files a/frontend/public/n-spheres/function.flac and /dev/null differ
diff --git a/frontend/public/n-spheres/function.mp3 b/frontend/public/n-spheres/function.mp3
new file mode 100644
index 0000000..74024be
Binary files /dev/null and b/frontend/public/n-spheres/function.mp3 differ
diff --git a/frontend/public/n-spheres/intersect.flac b/frontend/public/n-spheres/intersect.flac
deleted file mode 100644
index 246cff3..0000000
Binary files a/frontend/public/n-spheres/intersect.flac and /dev/null differ
diff --git a/frontend/public/n-spheres/intersect.mp3 b/frontend/public/n-spheres/intersect.mp3
new file mode 100644
index 0000000..3a65f83
Binary files /dev/null and b/frontend/public/n-spheres/intersect.mp3 differ
diff --git a/frontend/src/components/OscilloscopeDisplay.astro b/frontend/src/components/OscilloscopeDisplay.astro
index f6fa11f..b4fd21e 100644
--- a/frontend/src/components/OscilloscopeDisplay.astro
+++ b/frontend/src/components/OscilloscopeDisplay.astro
@@ -125,11 +125,11 @@
   // ── Signal configuration ──────────────────────────────────
   const SIGNALS = [
     { id: 'spirals',   name: 'Spirals',   src: '/spirals_shrt.mp3', artist: 'Jerobeam Fenderson', license: 'CC BY-NC-SA 4.0', link: 'http://oscilloscopemusic.com/' },
-    { id: 'function',  name: 'Function',  src: '/n-spheres/function.flac',  artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'intersect', name: 'Intersect', src: '/n-spheres/intersect.flac', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'attractor', name: 'Attractor', src: '/n-spheres/attractor.flac', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'flux',      name: 'Flux',      src: '/n-spheres/flux.flac',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
-    { id: 'core',      name: 'Core',      src: '/n-spheres/core.flac',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'function',  name: 'Function',  src: '/n-spheres/function.mp3',  artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'intersect', name: 'Intersect', src: '/n-spheres/intersect.mp3', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'attractor', name: 'Attractor', src: '/n-spheres/attractor.mp3', artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'flux',      name: 'Flux',      src: '/n-spheres/flux.mp3',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
+    { id: 'core',      name: 'Core',      src: '/n-spheres/core.mp3',      artist: 'Fenderson & Hansi3D', album: 'N-Spheres' },
   ] as const;
 
   // ── Skin configuration ────────────────────────────────────