add new tracks + autoshuffle

src/lib/AudioPlayer.svelte

@@ -18,6 +18,31 @@
   let currentTrackIndex = 0;
   let currentTrack = null;
 
+  function getSecureRandomIntExclusive(max) {
+    if (!max || max <= 0) return 0;
+    const cryptoObj = typeof window !== 'undefined' && (window.crypto || window.msCrypto);
+    if (cryptoObj && cryptoObj.getRandomValues) {
+      const maxUint32 = 4294967296;
+      const threshold = maxUint32 - (maxUint32 % max);
+      const buf = new Uint32Array(1);
+      for (;;) {
+        cryptoObj.getRandomValues(buf);
+        const r = buf[0];
+        if (r < threshold) return r % max;
+      }
+    }
+    return Math.floor(Math.random() * max);
+  }
+
+  function shuffleInPlace(arr) {
+    for (let i = arr.length - 1; i > 0; i--) {
+      const j = getSecureRandomIntExclusive(i + 1);
+      const tmp = arr[i];
+      arr[i] = arr[j];
+      arr[j] = tmp;
+    }
+  }
+
   onMount(async () => {
     await loadTracks();
   });
@@ -33,7 +58,8 @@
     try {
       loadingProgress = 10;
       
-      const trackFiles = ['mgxleepe.flac', 'jifmachinecd.flac'];
+      const trackFiles = ['mgxleepe.flac', 'jifmachinecd.flac', 'psshvec.flac', 'zimaooes.flac'];
+      shuffleInPlace(trackFiles);
       tracks = [];
       
       for (let i = 0; i < trackFiles.length; i++) {
@@ -41,7 +67,8 @@
         loadingProgress = 20 + (i * 60 / trackFiles.length);
         
         try {
-          const response = await fetch(`/music/${filename}`);
+          const url = `/music/${filename}`;
+          const response = await fetch(url, { cache: 'force-cache' });
           if (!response.ok) continue;
           
           const arrayBuffer = await response.arrayBuffer();
@@ -49,7 +76,7 @@
           
           tracks.push({
             filename,
-            src: `/music/${filename}`,
+            src: url,
             metadata,
             title: metadata.common.title || filename.replace('.flac', ''),
             artist: metadata.common.artist || 'Unknown Artist',
@@ -67,7 +94,8 @@
       }
       
       loadingProgress = 90;
-      currentTrack = tracks[0];
+      currentTrackIndex = getSecureRandomIntExclusive(tracks.length);
+      currentTrack = tracks[currentTrackIndex];
       loadingProgress = 100;
       
       setTimeout(() => {
@@ -166,6 +194,7 @@
     on:timeupdate={updateTime}
     on:loadedmetadata={updateTime}
     on:ended={nextTrack}
+    preload="auto"
   ></audio>
 
   {#if loading}