Audiobooks: built-in library, playback and synced progress through the audiobook player (classic frame kept)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/player.js

@@ -22,7 +22,7 @@ const altSrc = t => '/plex/music/:/transcode/universal/start.mp3?' + new URLSear
 // so changing songs is instant and a slow or lost connection does not stop the music.
 const sleep = ms => new Promise(ok => setTimeout(ok, ms));
 const tc = { m: new Map(), ctl: null, busy: false };
-const tcWant = () => pl.q.slice(Math.max(pl.i, 0), pl.i + 3).filter(t => !pl.alt.has(t.key)).map(t => t.src);
+const tcWant = () => pl.q.slice(Math.max(pl.i, 0), pl.i + 3).filter(t => !pl.alt.has(t.key) && !t.nocache).map(t => t.src); // (long audio, such as audiobooks, is streamed, not saved whole)
 function tcTrim() {
   const keep = new Set(pl.q.slice(Math.max(pl.i - 1, 0), pl.i + 3).map(t => t.src));
   for (const [src, v] of tc.m) if (!keep.has(src)) { URL.revokeObjectURL(v.url); tc.m.delete(src); }