diff --git a/packages/core/src/runtime/init.ts b/packages/core/src/runtime/init.ts
index 2a9200e24..6b62d3cfb 100644
--- a/packages/core/src/runtime/init.ts
+++ b/packages/core/src/runtime/init.ts
@@ -1933,7 +1933,7 @@ export function initSandboxRuntimeModular(): void {
             const mediaStart =
               Number.parseFloat(rawEl.dataset.playbackStart ?? rawEl.dataset.mediaStart ?? "0") ||
               0;
-            if (Number.isFinite(start) && state.currentTime >= start && state.currentTime < end) {
+            if (Number.isFinite(start) && state.currentTime >= start && state.currentTime <= end) {
               if (!rawEl.paused) {
                 clock.attachAudioSource({ el: rawEl, compositionStart: start, mediaStart });
                 foundActive = true;
diff --git a/packages/core/src/runtime/media.ts b/packages/core/src/runtime/media.ts
index 55658554b..0e65c28eb 100644
--- a/packages/core/src/runtime/media.ts
+++ b/packages/core/src/runtime/media.ts
@@ -165,7 +165,7 @@ export function syncRuntimeMedia(params: {
     // (el.ended resets to false when the user scrubs back, so seeks work.)
     const isActive =
       params.timeSeconds >= clip.start &&
-      params.timeSeconds < clip.end &&
+      params.timeSeconds <= clip.end &&
       relTime >= 0 &&
       (!el.ended || clip.loop);
     if (isActive) {