diff --git a/.gitignore b/.gitignore
index 7b0a9c368..12486f4a7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -242,3 +242,6 @@ configs/development.yaml
 Dockerfile.dev
 discussion
 tmp_test
+
+# output files
+*.wav
diff --git a/examples/online_serving/qwen3_omni/audio_0.wav b/examples/online_serving/qwen3_omni/audio_0.wav
deleted file mode 100644
index 897ceeac1..000000000
Binary files a/examples/online_serving/qwen3_omni/audio_0.wav and /dev/null differ