@@ -12,6 +12,7 @@ export function AlertsSettings() {
   const needs = usePref(prefs.notifyNeeds);
   const done = usePref(prefs.notifyDone);
   const sound = usePref(prefs.sound);
+  const appSounds = usePref(prefs.appSounds);
   const replies = usePref(prefs.markReplies);
   const tray = usePref(prefs.tray);
   const keep = usePref(prefs.whenClosed) === "keep";
@@ -40,6 +41,12 @@ export function AlertsSettings() {
         />
       )}
       <Toggle label={s.sound} hint={s.soundHint} checked={sound} onChange={prefs.sound.set} />
+      <Toggle
+        label={s.appSounds}
+        hint={s.appSoundsHint}
+        checked={appSounds}
+        onChange={prefs.appSounds.set}
+      />
       {!nearClock && <p className="text-muted text-xs leading-relaxed">{s.alertsNeedTray}</p>}
     </Section>
   );
 
@@ -20,6 +20,7 @@ import { errorText } from "../../lib/api";
 import { fileSize } from "../../lib/format";
 import { type Bot, FIELD_LIMITS } from "../../lib/protocol.gen";
 import { prefs, usePref } from "../../shell/prefs";
+import { playSound } from "../../shell/sounds";
 import { useApi } from "../../store/context";
 import { ContextMeter } from "./ContextMeter";
 import { draftOf, keepDraft } from "./drafts";
@@ -129,6 +130,7 @@ export const ChatComposer = memo(function ChatComposer({
       });
       setText("");
       files.clear();
+      playSound("sent");
       onSent();
     } catch (failure) {
       files.setError(errorText(failure));
 
@@ -26,6 +26,7 @@ import { NoticeRow } from "./NoticeRow";
 import { chatRows } from "./rows";
 import { useChat } from "./useChat";
 import { useFiles } from "./useFiles";
+import { useSharedSound } from "./useSharedSound";
 
 /** Distance from the bottom that still counts as "reading the latest". */
 const STICKY_PX = 80;
@@ -46,6 +47,7 @@ export const ChatView = memo(function ChatView({ bot, stopped }: { bot: Bot; sto
   // arrives while they look animates in.
   // biome-ignore lint/correctness/useExhaustiveDependencies: a new bot is a new chat
   const openedAt = useMemo(() => Date.now(), [bot.id]);
+  useSharedSound(chat.items, openedAt);
   const last = chat.items.at(-1);
   /** Changes whenever the end of the chat does. */
   const end = `${chat.items.length}/${last?.id}/${last?.updatedAt}/${chat.draft.length}`;
 
@@ -0,0 +1,29 @@
+// A soft sound when a bot shares a file in the chat the owner is looking at
+// (spec 15.1). Only for what arrives after the chat opened: older items,
+// and those loaded from further up, stay quiet.
+
+import { useEffect, useRef } from "react";
+import type { ChatItem } from "../../lib/protocol.gen";
+import { playSound } from "../../shell/sounds";
+import { useHost } from "../../store/context";
+import { isSharedFiles } from "./shared";
+
+export function useSharedSound(items: ChatItem[], since: number): void {
+  const host = useHost();
+  const played = useRef(new Set<string>());
+
+  useEffect(() => {
+    const fresh = items.filter(
+      (item) => item.updatedAt > since && !played.current.has(item.id) && isSharedFiles(item),
+    );
+    if (fresh.length === 0) {
+      return;
+    }
+    for (const item of fresh) {
+      played.current.add(item.id);
+    }
+    if (host.window.inFront()) {
+      playSound("file");
+    }
+  }, [items, since, host]);
+}
@@ -72,6 +72,9 @@ export const account = {
     markRepliesHint: "A dot on the Botloft icon in the taskbar while a conversation is unread.",
     sound: "Play a sound",
     soundHint: "A short sound with each notification, also with Botloft in front.",
+    appSounds: "App sounds",
+    appSoundsHint:
+      "Soft sounds while Botloft is in front: a message sent, a reply or a file in the open chat, a new bot or crew.",
     alertsNeedTray:
       "With the window closed, notifications only come with Botloft near the clock (in General).",
     keepAwake: "Keep the computer awake while bots work",
 
@@ -73,6 +73,9 @@ export const account: Messages["account"] = {
       "Un punto en el icono de Botloft en la barra de tareas mientras haya una conversación sin leer.",
     sound: "Reproducir un sonido",
     soundHint: "Un sonido corto con cada aviso, también con Botloft al frente.",
+    appSounds: "Sonidos de la app",
+    appSoundsHint:
+      "Sonidos suaves con Botloft al frente: mensaje enviado, respuesta o archivo en el chat abierto, bot o equipo nuevo.",
     alertsNeedTray:
       "Con la ventana cerrada, los avisos solo llegan con Botloft junto al reloj (en General).",
     keepAwake: "Mantener el equipo despierto mientras los bots trabajan",
 
@@ -73,6 +73,9 @@ export const account: Messages["account"] = {
       "Um ponto no ícone do Botloft na barra de tarefas enquanto houver conversa que você não leu.",
     sound: "Tocar um som",
     soundHint: "Um som curto com cada aviso, também com o Botloft na frente.",
+    appSounds: "Sons do app",
+    appSoundsHint:
+      "Sons suaves com o Botloft na frente: mensagem enviada, resposta ou arquivo no chat aberto, bot ou equipe nova.",
     alertsNeedTray:
       "Com a janela fechada, os avisos só chegam com o Botloft perto do relógio (em Geral).",
     keepAwake: "Não deixar o computador dormir enquanto os bots trabalham",
 
@@ -21,6 +21,7 @@ import { useAttentionMark } from "./attention";
 import { useFolderNotices } from "./folders";
 import { SidebarSlot, SidebarToggle } from "./sidebarToggle";
 import { useOpenAtSignIn } from "./signIn";
+import { useAppSounds } from "./sounds";
 import { TitleBar } from "./TitleBar";
 import { useTray } from "./tray";
 
@@ -34,6 +35,7 @@ export function Workspace() {
   useAttentionMark();
   useTray();
   useBotAlerts();
+  useAppSounds();
   useFolderNotices();
   useOpenAtSignIn();
 
 
@@ -9,8 +9,8 @@ import { t } from "../i18n";
 import type { Bot, BotId, BotState } from "../lib/protocol.gen";
 import { type AppState, activityOf } from "../store/app";
 import { useAppStore, useHost } from "../store/context";
-import { chime } from "./chime";
 import { prefs } from "./prefs";
+import { playSound } from "./sounds";
 
 /** How long after a notification opening Botloft goes to its bot. */
 const FOLLOW_MS = 10 * 60 * 1000;
@@ -74,9 +74,7 @@ export function useBotAlerts(): void {
         }
         const sound = prefs.sound.get();
         if (host.window.inFront()) {
-          if (sound) {
-            chime(kind === "done" ? "done" : "needs");
-          }
+          playSound(kind === "done" ? "done" : "needs");
           continue;
         }
         last = { bot: bot.id, at: Date.now() };