Still-picture songs save and play as audio plus one picture

frontend/p2p-client.js

@@ -101,6 +101,8 @@
     }
     for (const f of byId.values()) {
       if (String(f.id).startsWith('edit_')) continue; // edited cuts are never shared
+      // A still-picture song saved as audio (<id>.m4a) is not the server's file.
+      if (/\.m4a$/i.test(f.name) && !String(f.id).startsWith('upl_')) continue;
       const r = { videoId: f.id, cid: null, size: f.size, savedAt: Date.now(), lastCheckedAt: 0, state: 'unhashed' };
       await window.DeviceDB.putFile(r);
       out.push({ ...r, name: f.name });