diff --git a/spx-gui/src/components/editor/sprite/animation/SoundEditor.test.ts b/spx-gui/src/components/editor/sprite/animation/SoundEditor.test.ts
new file mode 100644
index 000000000..d24a011b7
--- /dev/null
+++ b/spx-gui/src/components/editor/sprite/animation/SoundEditor.test.ts
@@ -0,0 +1,161 @@
+import { mount } from '@vue/test-utils'
+import { defineComponent, nextTick } from 'vue'
+import { describe, expect, it, vi } from 'vitest'
+
+import { fromText } from '@/models/common/file'
+import { Animation } from '@/models/spx/animation'
+import { SpxProject } from '@/models/spx/project'
+import { Sound } from '@/models/spx/sound'
+import { provideLocalEditorCtx } from '@/components/editor/EditorContextProvider.vue'
+import SoundEditor from './SoundEditor.vue'
+
+vi.mock('@/components/asset', () => ({
+  useAddAssetFromLibrary: () => vi.fn(),
+  useAddSoundByRecording: () => vi.fn(),
+  useAddSoundFromLocalFile: () => vi.fn()
+}))
+
+vi.mock('@/utils/exception', async (importOriginal) => ({
+  ...(await importOriginal<typeof import('@/utils/exception')>()),
+  useMessageHandle: (fn: unknown) => ({ fn })
+}))
+
+function mockFile(name = 'mocked') {
+  return fromText(name, Math.random() + '')
+}
+
+function mountSoundEditor(animationInits?: { sound?: string | null; soundLoop?: boolean }) {
+  const project = new SpxProject()
+  const sound1 = new Sound('Sound01', mockFile())
+  const sound2 = new Sound('Sound02', mockFile())
+  project.addSound(sound1)
+  project.addSound(sound2)
+
+  const animation = new Animation('walk', {
+    sound: animationInits?.sound ?? undefined,
+    soundLoop: animationInits?.soundLoop ?? false
+  })
+  const doAction = vi.fn(async (_action, fn: () => void) => fn())
+  const state = { history: { doAction } }
+
+  const Harness = defineComponent({
+    name: 'SoundEditorHarness',
+    components: { SoundEditor },
+    setup() {
+      provideLocalEditorCtx({ project, state: state as any })
+      return { animation, closed: 0 }
+    },
+    template: '<SoundEditor :animation="animation" @close="closed += 1" />'
+  })
+
+  const wrapper = mount(Harness, {
+    global: {
+      directives: {
+        radar: () => {}
+      },
+      mocks: {
+        $t: (message?: { en?: string } | string) => (typeof message === 'string' ? message : message?.en ?? '')
+      },
+      stubs: {
+        SoundItem: {
+          props: ['sound', 'selectable'],
+          emits: ['click'],
+          template:
+            '<button class="sound-item" :data-selected="selectable && selectable.selected" @click="$emit(\'click\')">{{ sound.name }}</button>'
+        },
+        UIDropdown: {
+          template: '<div><slot name="trigger"></slot><slot></slot></div>'
+        },
+        UITooltip: {
+          template: '<div class="tooltip"><slot name="trigger"></slot><slot></slot></div>'
+        },
+        UIMenu: {
+          template: '<div><slot></slot></div>'
+        },
+        UIMenuItem: {
+          emits: ['click'],
+          template: '<button type="button" @click="$emit(\'click\')"><slot></slot></button>'
+        }
+      }
+    }
+  })
+
+  return { wrapper, animation, sounds: [sound1, sound2], doAction }
+}
+
+describe('SoundEditor', () => {
+  it('hides playback selector until a sound is selected', () => {
+    const { wrapper } = mountSoundEditor()
+
+    expect(wrapper.text()).not.toContain('Playback')
+  })
+
+  it('closes without saving on cancel', async () => {
+    const { wrapper, animation, doAction } = mountSoundEditor()
+    const originalSound = animation.sound
+
+    await wrapper.findAll('.sound-item')[0].trigger('click')
+    const cancelButton = wrapper.findAll('button').find((button) => button.text() === 'Cancel')
+
+    expect(cancelButton).toBeTruthy()
+    await cancelButton!.trigger('click')
+
+    expect(doAction).not.toHaveBeenCalled()
+    expect(animation.sound).toBe(originalSound)
+    expect((wrapper.vm as any).closed).toBe(1)
+  })
+
+  it('shows playback selector after selecting a sound', async () => {
+    const { wrapper } = mountSoundEditor()
+
+    await wrapper.findAll('.sound-item')[0].trigger('click')
+    await nextTick()
+
+    expect(wrapper.text()).toContain('Playback')
+    expect(wrapper.get('select').text()).toContain('One')
+    expect(wrapper.get('select').text()).toContain('Loop')
+    expect(wrapper.text()).toContain('Play Once')
+
+    await wrapper.get('select').setValue('follow-animation')
+
+    expect(wrapper.text()).toContain('Loop with Animation')
+  })
+
+  it('saves selected sound and one-shot playback on confirm', async () => {
+    const { wrapper, animation, sounds, doAction } = mountSoundEditor()
+
+    await wrapper.findAll('.sound-item')[0].trigger('click')
+    await wrapper.get('select').setValue('once')
+    await wrapper.get('form').trigger('submit')
+
+    expect(doAction).toHaveBeenCalledTimes(1)
+    expect(animation.sound).toBe(sounds[0].id)
+    expect(animation.soundLoop).toBe(false)
+    expect((wrapper.vm as any).closed).toBe(1)
+  })
+
+  it('saves selected sound and follow-animation playback on confirm', async () => {
+    const { wrapper, animation, sounds, doAction } = mountSoundEditor()
+
+    await wrapper.findAll('.sound-item')[1].trigger('click')
+    await wrapper.get('select').setValue('follow-animation')
+    await wrapper.get('form').trigger('submit')
+
+    expect(doAction).toHaveBeenCalledTimes(1)
+    expect(animation.sound).toBe(sounds[1].id)
+    expect(animation.soundLoop).toBe(true)
+    expect((wrapper.vm as any).closed).toBe(1)
+  })
+
+  it('resets playback to one-shot when switching sounds', async () => {
+    const { wrapper, animation, sounds } = mountSoundEditor()
+
+    await wrapper.findAll('.sound-item')[0].trigger('click')
+    await wrapper.get('select').setValue('follow-animation')
+    await wrapper.findAll('.sound-item')[1].trigger('click')
+    await wrapper.get('form').trigger('submit')
+
+    expect(animation.sound).toBe(sounds[1].id)
+    expect(animation.soundLoop).toBe(false)
+  })
+})
diff --git a/spx-gui/src/components/editor/sprite/animation/SoundEditor.vue b/spx-gui/src/components/editor/sprite/animation/SoundEditor.vue
index c140bbdcb..6782af4f2 100644
--- a/spx-gui/src/components/editor/sprite/animation/SoundEditor.vue
+++ b/spx-gui/src/components/editor/sprite/animation/SoundEditor.vue
@@ -2,11 +2,11 @@
   <UIDropdownForm
     v-radar="{ name: 'Sound editor dropdown form', desc: 'Dropdown form for selecting animation sound' }"
     :title="$t(actionName)"
-    style="width: 320px; max-height: 400px"
+    style="width: 408px; max-height: 400px"
     @cancel="emit('close')"
     @confirm="handleConfirm"
   >
-    <ul class="flex-[1_1_0] flex flex-wrap content-start gap-3">
+    <ul class="flex-[1_1_0] flex flex-wrap content-start gap-2">
       <SoundItem
         v-for="sound in editorCtx.project.sounds"
         :key="sound.id"
@@ -42,13 +42,51 @@
         </UIMenu>
       </UIDropdown>
     </ul>
+    <template #footer-left>
+      <div v-if="selected != null" class="flex h-8 items-center gap-2">
+        <span class="text-base text-grey-900">
+          {{ $t({ en: 'Playback', zh: '播放' }) }}
+        </span>
+        <UITooltip>
+          {{ $t(playbackTooltip) }}
+          <template #trigger>
+            <UISelect
+              v-radar="{
+                name: 'Animation sound playback selector',
+                desc: 'Select how the selected sound plays with the animation'
+              }"
+              :value="selectedPlayback"
+              class="min-w-[80px]"
+              @update:value="handlePlaybackUpdate"
+            >
+              <UISelectOption value="once">
+                {{ $t({ en: 'One', zh: '一次' }) }}
+              </UISelectOption>
+              <UISelectOption value="follow-animation">
+                {{ $t({ en: 'Loop', zh: '循环' }) }}
+              </UISelectOption>
+            </UISelect>
+          </template>
+        </UITooltip>
+      </div>
+    </template>
   </UIDropdownForm>
 </template>
 
 <script setup lang="ts">
-import { ref } from 'vue'
+import { computed, ref } from 'vue'
 import type { Animation } from '@/models/spx/animation'
-import { UIDropdownForm, UIDropdown, UIMenu, UIMenuItem, UIBlockItem, UIIcon } from '@/components/ui'
+import {
+  UIDropdownForm,
+  UIDropdown,
+  UIMenu,
+  UIMenuItem,
+  UIBlockItem,
+  UIIcon,
+  UISelect,
+  UISelectOption,
+  UITooltip
+} from '@/components/ui'
 import { useEditorCtx } from '@/components/editor/EditorContextProvider.vue'
 import SoundItem from '@/components/editor/stage/sound/SoundItem.vue'
 import { useAddAssetFromLibrary, useAddSoundFromLocalFile, useAddSoundByRecording } from '@/components/asset'
@@ -67,15 +105,34 @@ const editorCtx = useEditorCtx()
 
 const actionName = { en: 'Select sound', zh: '选择声音' }
 const selected = ref(props.animation.sound)
+type Playback = 'once' | 'follow-animation'
+const selectedPlayback = ref<Playback>(props.animation.soundLoop ? 'follow-animation' : 'once')
+const playbackTooltip = computed(() =>
+  selectedPlayback.value === 'follow-animation'
+    ? { en: 'Loop with Animation', zh: '随动画循环' }
+    : { en: 'Play Once', zh: '播放一次' }
+)
+
+function selectSound(sound: string) {
+  if (selected.value !== sound) selectedPlayback.value = 'once'
+  selected.value = sound
+}
+
+function handlePlaybackUpdate(playback: string | null) {
+  if (playback !== 'once' && playback !== 'follow-animation') return
+  selectedPlayback.value = playback
+}
+
 async function handleSoundClick(sound: string) {
-  selected.value = selected.value === sound ? null : sound
+  if (selected.value === sound) selected.value = null
+  else selectSound(sound)
 }
 
 const addFromLocalFile = useAddSoundFromLocalFile()
 const handleAddFromLocalFile = useMessageHandle(
   async () => {
     const sound = await addFromLocalFile(editorCtx.project)
-    selected.value = sound.id
+    selectSound(sound.id)
   },
   {
     en: 'Failed to add sound from local file',
@@ -87,7 +144,7 @@ const addAssetFromLibrary = useAddAssetFromLibrary()
 const handleAddFromAssetLibrary = useMessageHandle(
   async () => {
     const sounds = await addAssetFromLibrary(editorCtx.project, AssetType.Sound)
-    selected.value = sounds[0].id
+    selectSound(sounds[0].id)
   },
   { en: 'Failed to add sound from asset library', zh: '从素材库添加失败' }
 ).fn
@@ -96,13 +153,16 @@ const addSoundFromRecording = useAddSoundByRecording()
 const handleRecord = useMessageHandle(
   async () => {
     const sound = await addSoundFromRecording(editorCtx.project)
-    selected.value = sound.id
+    selectSound(sound.id)
   },
   { en: 'Failed to record sound', zh: '录音失败' }
 ).fn
 
 async function handleConfirm() {
-  await editorCtx.state.history.doAction({ name: actionName }, () => props.animation.setSound(selected.value))
+  await editorCtx.state.history.doAction({ name: actionName }, () => {
+    props.animation.setSound(selected.value)
+    props.animation.setSoundLoop(selectedPlayback.value === 'follow-animation')
+  })
   emit('close')
 }
 </script>
diff --git a/spx-gui/src/components/ui/UIDropdownForm.vue b/spx-gui/src/components/ui/UIDropdownForm.vue
index f2273a4c9..11b9c8238 100644
--- a/spx-gui/src/components/ui/UIDropdownForm.vue
+++ b/spx-gui/src/components/ui/UIDropdownForm.vue
@@ -14,21 +14,26 @@
     <main class="flex-auto min-h-0 overflow-y-auto px-4 py-3">
       <slot></slot>
     </main>
-    <footer class="flex-none flex justify-end gap-3 p-4">
-      <UIButton
-        v-radar="{ name: 'Cancel button', desc: 'Click to cancel the operation in dropdown' }"
-        type="neutral"
-        @click="emit('cancel')"
-      >
-        {{ $t({ en: 'Cancel', zh: '取消' }) }}
-      </UIButton>
-      <UIButton
-        v-radar="{ name: 'Confirm button', desc: 'Click to submit the dropdown' }"
-        type="primary"
-        html-type="submit"
-      >
-        {{ $t({ en: 'Confirm', zh: '确认' }) }}
-      </UIButton>
+    <footer class="flex-none flex items-center justify-between gap-3 p-4">
+      <div class="min-w-0 flex items-center">
+        <slot name="footer-left"></slot>
+      </div>
+      <div class="flex justify-end gap-3">
+        <UIButton
+          v-radar="{ name: 'Cancel button', desc: 'Click to cancel the operation in dropdown' }"
+          type="neutral"
+          @click="emit('cancel')"
+        >
+          {{ $t({ en: 'Cancel', zh: '取消' }) }}
+        </UIButton>
+        <UIButton
+          v-radar="{ name: 'Confirm button', desc: 'Click to submit the dropdown' }"
+          type="primary"
+          html-type="submit"
+        >
+          {{ $t({ en: 'Confirm', zh: '确认' }) }}
+        </UIButton>
+      </div>
     </footer>
   </form>
 </template>