diff --git a/qa/scenarios/media/audio-proxy-and-limit-handling.yaml b/qa/scenarios/media/audio-proxy-and-limit-handling.yaml
index 8c29de12c0b5..279d34874fc9 100644
--- a/qa/scenarios/media/audio-proxy-and-limit-handling.yaml
+++ b/qa/scenarios/media/audio-proxy-and-limit-handling.yaml
@@ -23,11 +23,11 @@ scenario:
     - src/media-understanding/attachments.cache.ts
     - src/infra/net/proxy-fetch.ts
     - extensions/openai/media-understanding-provider.ts
-    - test/e2e/qa-lab/media/audio-proxy-and-limit-handling.product.test.ts
+    - test/e2e/qa-lab/media/audio-proxy-and-limit-handling.e2e.test.ts
   regressionRefs:
     - https://github.com/openclaw/openclaw/pull/73817
     - https://github.com/openclaw/openclaw/pull/97280
   execution:
     kind: vitest
-    path: test/e2e/qa-lab/media/audio-proxy-and-limit-handling.product.test.ts
+    path: test/e2e/qa-lab/media/audio-proxy-and-limit-handling.e2e.test.ts
     summary: Run the apply-to-provider audio path against loopback proxy and provider servers, then prove maxBytes rejection performs no network IO.
diff --git a/qa/scenarios/media/media-audio-selection.yaml b/qa/scenarios/media/media-audio-selection.yaml
new file mode 100644
index 000000000000..94e1392e0416
--- /dev/null
+++ b/qa/scenarios/media/media-audio-selection.yaml
@@ -0,0 +1,27 @@
+title: Media audio selection and STT fallback
+
+scenario:
+  id: media-audio-selection
+  surface: media-understanding
+  coverage:
+    primary:
+      - media.audio-attachment-selection
+      - media.batch-stt-provider-and-cli-fallback
+  objective: Verify audio attachment policy and ordered provider-to-CLI transcription fallback through the media-understanding apply boundary.
+  successCriteria:
+    - Mixed attachments select only eligible audio under first/all modes, last preference, and configured caps.
+    - Multiple selected audio transcripts preserve deterministic selected-attachment order in inbound context.
+    - A failed provider attempt falls through to an actual temporary executable without mocking process execution.
+  docsRefs:
+    - docs/nodes/media-understanding.md
+    - docs/help/testing.md
+  codeRefs:
+    - src/media-understanding/apply.ts
+    - src/media-understanding/attachments.select.ts
+    - src/media-understanding/runner.ts
+    - src/media-understanding/runner.entries.ts
+    - test/e2e/qa-lab/media/media-audio-selection.e2e.test.ts
+  execution:
+    kind: vitest
+    path: test/e2e/qa-lab/media/media-audio-selection.e2e.test.ts
+    summary: Run product-boundary audio selection and real provider-to-CLI fallback proof.
diff --git a/qa/scenarios/media/media-reference-intake.yaml b/qa/scenarios/media/media-reference-intake.yaml
index b371d54c1471..6d6f002b1ddb 100644
--- a/qa/scenarios/media/media-reference-intake.yaml
+++ b/qa/scenarios/media/media-reference-intake.yaml
@@ -22,8 +22,8 @@ scenario:
     - src/media/fetch.ts
     - src/media/store.ts
     - packages/media-core/src/mime.ts
-    - test/e2e/qa-lab/media/media-reference-intake.product.test.ts
+    - test/e2e/qa-lab/media/media-reference-intake.e2e.test.ts
   execution:
     kind: vitest
-    path: test/e2e/qa-lab/media/media-reference-intake.product.test.ts
+    path: test/e2e/qa-lab/media/media-reference-intake.e2e.test.ts
     summary: Load plain-path, file URL, guarded loopback HTTP, and media-store references and verify byte-sniffed MIME and kind.
diff --git a/qa/scenarios/media/pdf-document-extraction-dispatch.yaml b/qa/scenarios/media/pdf-document-extraction-dispatch.yaml
index 74542e2790a2..dff289c8fb01 100644
--- a/qa/scenarios/media/pdf-document-extraction-dispatch.yaml
+++ b/qa/scenarios/media/pdf-document-extraction-dispatch.yaml
@@ -21,8 +21,8 @@ scenario:
     - src/media/document-extractors.runtime.ts
     - src/plugins/document-extractors.runtime.ts
     - extensions/document-extract/document-extractor.ts
-    - test/e2e/qa-lab/media/pdf-document-extraction-dispatch.product.test.ts
+    - test/e2e/qa-lab/media/pdf-document-extraction-dispatch.e2e.test.ts
   execution:
     kind: vitest
-    path: test/e2e/qa-lab/media/pdf-document-extraction-dispatch.product.test.ts
+    path: test/e2e/qa-lab/media/pdf-document-extraction-dispatch.e2e.test.ts
     summary: Run a parseable inline PDF through bundled extractor discovery, real clawpdf extraction, and the disabled-plugin failure path.
diff --git a/qa/scenarios/media/vision-routing-core.yaml b/qa/scenarios/media/vision-routing-core.yaml
index da6350e5ff4e..97f06762da02 100644
--- a/qa/scenarios/media/vision-routing-core.yaml
+++ b/qa/scenarios/media/vision-routing-core.yaml
@@ -20,8 +20,8 @@ scenario:
     - src/media-understanding/runner.ts
     - src/auto-reply/media-note.ts
     - src/auto-reply/reply/current-turn-images.ts
-    - test/e2e/qa-lab/media/vision-routing-core.product.test.ts
+    - test/e2e/qa-lab/media/vision-routing-core.e2e.test.ts
   execution:
     kind: vitest
-    path: test/e2e/qa-lab/media/vision-routing-core.product.test.ts
+    path: test/e2e/qa-lab/media/vision-routing-core.e2e.test.ts
     summary: Exercise native vision bypass and ordered provider fallback through apply, summary projection, and current-turn image resolution.
diff --git a/test/e2e/qa-lab/media/audio-proxy-and-limit-handling.product.test.ts b/test/e2e/qa-lab/media/audio-proxy-and-limit-handling.e2e.test.ts
similarity index 100%
rename from test/e2e/qa-lab/media/audio-proxy-and-limit-handling.product.test.ts
rename to test/e2e/qa-lab/media/audio-proxy-and-limit-handling.e2e.test.ts
diff --git a/test/e2e/qa-lab/media/media-audio-selection.e2e.test.ts b/test/e2e/qa-lab/media/media-audio-selection.e2e.test.ts
new file mode 100644
index 000000000000..2052f86ad643
--- /dev/null
+++ b/test/e2e/qa-lab/media/media-audio-selection.e2e.test.ts
@@ -0,0 +1,247 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import type { MsgContext } from "../../../../src/auto-reply/templating.js";
+import type { OpenClawConfig } from "../../../../src/config/types.js";
+import { applyMediaUnderstanding } from "../../../../src/media-understanding/apply.js";
+import { MIN_AUDIO_FILE_BYTES } from "../../../../src/media-understanding/defaults.constants.js";
+import type { MediaUnderstandingProvider } from "../../../../src/media-understanding/types.js";
+import { useAutoCleanupTempDirTracker } from "../../../helpers/temp-dir.js";
+
+vi.mock("../../../../src/plugins/capability-provider-runtime.js", () => ({
+  resolvePluginCapabilityProviders: () => [],
+}));
+
+const tempDirs = useAutoCleanupTempDirTracker(afterEach);
+
+async function writeAudioFixture(dir: string, name: string, fill: number): Promise<string> {
+  const filePath = path.join(dir, name);
+  await fs.writeFile(filePath, Buffer.alloc(MIN_AUDIO_FILE_BYTES + 1, fill));
+  return filePath;
+}
+
+function createSelectionConfig(
+  attachments: NonNullable<
+    NonNullable<NonNullable<OpenClawConfig["tools"]>["media"]>["audio"]
+  >["attachments"],
+): OpenClawConfig {
+  return {
+    models: {
+      providers: {
+        "qa-stt": {
+          apiKey: "qa-test-key", // pragma: allowlist secret
+          baseUrl: "https://qa.invalid",
+          models: [],
+        },
+      },
+    },
+    tools: {
+      media: {
+        models: [{ provider: "qa-stt", model: "fixture-stt", capabilities: ["audio"] }],
+        audio: {
+          enabled: true,
+          attachments,
+        },
+      },
+    },
+  };
+}
+
+function createAudioProvider(seenFileNames: string[]): MediaUnderstandingProvider {
+  return {
+    id: "qa-stt",
+    capabilities: ["audio"],
+    resolveAuth: () => ({ kind: "none" as const, source: "qa-product-fixture" }),
+    transcribeAudio: async (request: { fileName: string }) => {
+      seenFileNames.push(request.fileName);
+      return { text: `transcript:${request.fileName}`, model: "fixture-stt" };
+    },
+  };
+}
+
+async function writePortableTranscriber(dir: string): Promise<{
+  command: string;
+  markerPath: string;
+}> {
+  const markerPath = path.join(dir, "cli-ran.txt");
+  const scriptPath = path.join(dir, "qa-transcriber.cjs");
+  await fs.writeFile(
+    scriptPath,
+    [
+      "#!/usr/bin/env node",
+      'const fs = require("node:fs");',
+      'const path = require("node:path");',
+      "const [markerPath, mediaPath] = process.argv.slice(2);",
+      "if (!markerPath || !mediaPath) process.exit(2);",
+      "fs.writeFileSync(markerPath, mediaPath);",
+      "process.stdout.write(`cli transcript:${path.basename(mediaPath)}\\n`);",
+      "",
+    ].join("\n"),
+    { mode: 0o755 },
+  );
+  if (process.platform !== "win32") {
+    return { command: scriptPath, markerPath };
+  }
+
+  const command = path.join(dir, "qa-transcriber.cmd");
+  await fs.writeFile(command, `@echo off\r\n"${process.execPath}" "${scriptPath}" %*\r\n`, "utf8");
+  return { command, markerPath };
+}
+
+describe("QA media audio selection product proof", () => {
+  it("applies mixed-attachment preference, mode, caps, and transcript ordering", async () => {
+    const dir = tempDirs.make("openclaw-qa-media-audio-selection-");
+    const firstAudio = await writeAudioFixture(dir, "first.ogg", 0x11);
+    const secondAudio = await writeAudioFixture(dir, "second.ogg", 0x22);
+    const thirdAudio = await writeAudioFixture(dir, "third.ogg", 0x33);
+    const preflightAudio = await writeAudioFixture(dir, "preflight.ogg", 0x44);
+    const imagePath = path.join(dir, "ignored.png");
+    await fs.writeFile(imagePath, Buffer.from("not-an-audio-attachment"));
+    const media = [
+      { path: firstAudio, contentType: "audio/ogg" },
+      { path: imagePath, contentType: "image/png" },
+      { path: secondAudio, contentType: "audio/ogg" },
+      { path: thirdAudio, contentType: "audio/ogg" },
+      { path: preflightAudio, contentType: "audio/ogg", transcribed: true },
+    ];
+
+    const firstModeCalls: string[] = [];
+    const firstModeCtx: MsgContext = { Body: "", media };
+    const firstModeResult = await applyMediaUnderstanding({
+      ctx: firstModeCtx,
+      cfg: createSelectionConfig({ mode: "first", prefer: "last", maxAttachments: 3 }),
+      providers: { "qa-stt": createAudioProvider(firstModeCalls) },
+      processingMode: "audio-only",
+      workspaceDir: dir,
+    });
+
+    expect(firstModeCalls).toEqual(["third.ogg"]);
+    expect(firstModeResult.outputs.map((output) => output.attachmentIndex)).toEqual([3]);
+    expect(firstModeCtx.Transcript).toBe("transcript:third.ogg");
+
+    const allModeCalls: string[] = [];
+    const allModeCtx: MsgContext = { Body: "", media };
+    const allModeResult = await applyMediaUnderstanding({
+      ctx: allModeCtx,
+      cfg: createSelectionConfig({ mode: "all", prefer: "last", maxAttachments: 2 }),
+      providers: { "qa-stt": createAudioProvider(allModeCalls) },
+      processingMode: "audio-only",
+      workspaceDir: dir,
+    });
+
+    expect(allModeCalls).toEqual(["third.ogg", "second.ogg"]);
+    expect(allModeResult.outputs.map((output) => output.attachmentIndex)).toEqual([3, 2]);
+    expect(
+      allModeResult.decisions.find((decision) => decision.capability === "audio"),
+    ).toMatchObject({
+      outcome: "success",
+      attachments: [{ attachmentIndex: 3 }, { attachmentIndex: 2 }],
+    });
+    expect(allModeCtx.Transcript).toBe(
+      "Audio 1:\ntranscript:third.ogg\n\nAudio 2:\ntranscript:second.ogg",
+    );
+    expect(allModeCtx.Body).toBe(
+      [
+        "[Audio 1/2]\nTranscript:\ntranscript:third.ogg",
+        "[Audio 2/2]\nTranscript:\ntranscript:second.ogg",
+      ].join("\n\n"),
+    );
+  });
+
+  it("falls through from a failed provider to an actual temporary CLI executable", async () => {
+    const dir = tempDirs.make("openclaw-qa-media-audio-fallback-");
+    const audioPath = await writeAudioFixture(dir, "fallback.wav", 0x55);
+    const executable = await writePortableTranscriber(dir);
+    let providerAttempts = 0;
+    const ctx: MsgContext = {
+      Body: "",
+      media: [{ path: audioPath, contentType: "audio/wav" }],
+    };
+    const cfg: OpenClawConfig = {
+      models: {
+        providers: {
+          "qa-stt": {
+            apiKey: "qa-test-key", // pragma: allowlist secret
+            baseUrl: "https://qa.invalid",
+            models: [],
+          },
+        },
+      },
+      tools: {
+        media: {
+          models: [
+            { provider: "qa-stt", model: "fixture-stt", capabilities: ["audio"] },
+            {
+              type: "cli",
+              command: executable.command,
+              args: [executable.markerPath, "{{MediaPath}}"],
+              capabilities: ["audio"],
+            },
+          ],
+          audio: { enabled: true },
+        },
+      },
+    };
+
+    const result = await applyMediaUnderstanding({
+      ctx,
+      cfg,
+      providers: {
+        "qa-stt": {
+          id: "qa-stt",
+          capabilities: ["audio"],
+          resolveAuth: () => ({ kind: "none", source: "qa-product-fixture" }),
+          transcribeAudio: async () => {
+            providerAttempts += 1;
+            throw new Error("intentional provider failure");
+          },
+        },
+      },
+      processingMode: "audio-only",
+      workspaceDir: dir,
+    });
+
+    expect(providerAttempts).toBe(1);
+    expect(await fs.readFile(executable.markerPath, "utf8")).toBe(await fs.realpath(audioPath));
+    expect(ctx.Transcript).toBe("cli transcript:fallback.wav");
+    const cliProvider = path.parse(executable.command).name;
+    expect(result.outputs).toEqual([
+      expect.objectContaining({
+        attachmentIndex: 0,
+        kind: "audio.transcription",
+        provider: cliProvider,
+        model: executable.command,
+        text: "cli transcript:fallback.wav",
+      }),
+    ]);
+    expect(result.decisions.find((decision) => decision.capability === "audio")).toMatchObject({
+      outcome: "success",
+      attachments: [
+        {
+          attachmentIndex: 0,
+          attempts: [
+            {
+              type: "provider",
+              provider: "qa-stt",
+              model: "fixture-stt",
+              outcome: "failed",
+              reason: expect.stringContaining("intentional provider failure"),
+            },
+            {
+              type: "cli",
+              provider: cliProvider,
+              model: executable.command,
+              outcome: "success",
+            },
+          ],
+          chosen: {
+            type: "cli",
+            provider: cliProvider,
+            model: executable.command,
+            outcome: "success",
+          },
+        },
+      ],
+    });
+  });
+});
diff --git a/test/e2e/qa-lab/media/media-reference-intake.product.test.ts b/test/e2e/qa-lab/media/media-reference-intake.e2e.test.ts
similarity index 100%
rename from test/e2e/qa-lab/media/media-reference-intake.product.test.ts
rename to test/e2e/qa-lab/media/media-reference-intake.e2e.test.ts
diff --git a/test/e2e/qa-lab/media/pdf-document-extraction-dispatch.product.test.ts b/test/e2e/qa-lab/media/pdf-document-extraction-dispatch.e2e.test.ts
similarity index 100%
rename from test/e2e/qa-lab/media/pdf-document-extraction-dispatch.product.test.ts
rename to test/e2e/qa-lab/media/pdf-document-extraction-dispatch.e2e.test.ts
diff --git a/test/e2e/qa-lab/media/vision-routing-core.product.test.ts b/test/e2e/qa-lab/media/vision-routing-core.e2e.test.ts
similarity index 100%
rename from test/e2e/qa-lab/media/vision-routing-core.product.test.ts
rename to test/e2e/qa-lab/media/vision-routing-core.e2e.test.ts