diff --git a/crates/ipx/src/main.rs b/crates/ipx/src/main.rs
index 9be989f..9c8a8aa 100644
--- a/crates/ipx/src/main.rs
+++ b/crates/ipx/src/main.rs
@@ -2683,6 +2683,58 @@ mod tests {
         assert!(deadair::plan_for(&ctx, u, "f", 7).await.unwrap().is_none());
     }
 
+    #[tokio::test]
+    async fn two_people_play_one_file_each_in_their_own_version_and_place() {
+        let ctx = test_ctx(config::Config::default()).await;
+        let db = &ctx.db;
+        for sql in [
+            "INSERT INTO entries (feed_id, guid, first_seen, duration) VALUES ('f', 'g', 1, 600)",
+            "INSERT INTO enclosures (id, feed_id, guid, url, path, state, downloaded_at)
+             VALUES (7, 'f', 'g', 'http://x/a.mp3', '/x/a.mp3', 'done', 100)",
+        ] {
+            db.sql(sql).await.unwrap();
+        }
+        db.store_plans(7, r#"{"300": {"cuts": [[60000,120000],[200000,260000]], "pieces": []},
+                              "500": {"cuts": [[60000,100000]], "pieces": []}}"#).await.unwrap();
+        // One file on disk, three listeners at once: DeadAir at the usual pause, at a longer
+        // one, and the original.
+        let (usual, long, plain) = (
+            db.create_user("usual", None, false).await.unwrap(),
+            db.create_user("long", None, false).await.unwrap(),
+            db.create_user("plain", None, false).await.unwrap(),
+        );
+        for u in [usual, long, plain] {
+            db.subscribe(u, "f").await.unwrap();
+        }
+        for u in [usual, long] {
+            db.set_deadair(u, "f", Some(true)).await.unwrap();
+        }
+        db.set_deadair_pause(long, "f", 500).await.unwrap();
+        // Each is handed their own playlist, as /media/7/deadair.m3u8 does.
+        let playing = deadair::Playing::default();
+        for u in [usual, long] {
+            let plan = deadair::plan_for(&ctx, u, "f", 7).await.unwrap().unwrap();
+            playing.lock().unwrap().insert((u, "f".into(), "g".into()), Arc::new(plan));
+        }
+        assert!(deadair::plan_for(&ctx, plain, "f", 7).await.unwrap().is_none());
+        // All three save 3:20 of what they hear, as the position route does: each is read in
+        // that person's own clock and kept as a place in the original, theirs alone.
+        let mut kept = vec![];
+        for u in [usual, long, plain] {
+            let (secs, len) = deadair::on_save(&ctx, &playing, u, "f", "g", 200, None).await.unwrap();
+            db.set_position(u, "f", "g", secs, len).await.unwrap();
+            kept.push(secs);
+        }
+        assert_eq!(kept, [320, 240, 200], "two minutes cut before 3:20, forty seconds, none");
+        // Each comes back to 3:20 of their own version, whatever the others saved.
+        let order = db::order_sql("published", "desc");
+        for (u, len) in [(usual, 480), (long, 560), (plain, 600)] {
+            let mut rows = db.entries_in(u, Some("f"), db::Filter::All, None, 0, 10, &order).await.unwrap();
+            deadair::for_reader(&ctx, u, &mut rows).await.unwrap();
+            assert_eq!((rows[0].position, rows[0].duration), (200, Some(len)), "user {u}");
+        }
+    }
+
     #[tokio::test]
     async fn two_changes_to_the_catalogue_at_once_both_keep() {
         let ctx = Arc::new(test_ctx(config::Config::default()).await);
diff --git a/tests/ui/app.spec.js b/tests/ui/app.spec.js
index 65bee55..0258aef 100644
--- a/tests/ui/app.spec.js
+++ b/tests/ui/app.spec.js
@@ -1936,6 +1936,36 @@ test('DeadAir is off until turned on for a show, then plays it shortened, with y
   await page.locator('#ssave').click();
   await expect.poll(async () => (await entry()).enclosures[0].deadair).toBeLessThan(usual);
 
+  // Someone else on the same show at the usual pause, at the same address at the same time: one
+  // file on disk, a playlist each, and neither kept by a cache to be handed to the other.
+  {
+    const { execFileSync } = require('child_process');
+    const setup = require('./global-setup');
+    const env = { ...process.env, IPX_CONFIG: `${setup.root}/config/config.toml`, IPX_DATA_DIR: `${setup.root}/data` };
+    try { execFileSync('./target/debug/ipx', ['user', 'add', 'quinn'], { input: 'quinnpassword', env }); }
+    catch (e) { if (!String(e.stderr || e.stdout).includes('already exists')) throw e; }
+    const ctx = await page.context().browser().newContext();
+    const quinn = await ctx.newPage();
+    await quinn.goto('/login');
+    await quinn.locator('#name').fill('quinn');
+    await quinn.locator('#pw').fill('quinnpassword');
+    await quinn.locator('button[type=submit]').click();
+    await expect(quinn.locator('#feedlist')).toBeVisible();
+    await quinn.request.post('/api/feeds', { data: { url: 'http://127.0.0.1:8792/quiet.xml' } });
+    await quinn.request.patch(`/api/feeds/${encodeURIComponent(id)}`, { data: { deadair: true } });
+    const enc = (await entry()).enclosures[0].id;
+    const fetchList = async p => { const r = await p.request.get(`/media/${enc}/deadair.m3u8`);
+      return { status: r.status(), cache: r.headers()['cache-control'], body: await r.text() }; };
+    const [mine, theirs] = await Promise.all([fetchList(page), fetchList(quinn)]);
+    const length = l => l.body.match(/#EXTINF:([\d.]+)/g).reduce((s, x) => s + Number(x.slice(8)), 0);
+    expect([mine.status, theirs.status]).toEqual([200, 200]);
+    expect([mine.cache, theirs.cache]).toEqual(['no-store', 'no-store']);
+    expect(mine.body).not.toBe(theirs.body);
+    expect(length(theirs), 'the usual pause cuts more than the longer one').toBeLessThan(length(mine));
+    await quinn.request.delete(`/api/feeds/${encodeURIComponent(id)}`);
+    await ctx.close();
+  }
+
   // Saved without its dead air too (#186): smaller than the original, named to say so.
   const saved = await page.evaluate(async id => {
     const [d, o, p] = await Promise.all([fetch(`/media/${id}/deadair`), fetch(`/media/${id}`), fetch(`/media/${id}/deadair.mp3`, { headers: { Range: 'bytes=0-99' } })]);