diff --git a/app/src/main/cpp/audio_player.cpp b/app/src/main/cpp/audio_player.cpp
index f7b8020..76c4a37 100644
--- a/app/src/main/cpp/audio_player.cpp
+++ b/app/src/main/cpp/audio_player.cpp
@@ -34,6 +34,8 @@ int filter_again = 0;
 int filter_release = 0;
 const char *filter_desc = "superequalizer=6b=4:8b=5:10b=5";
 
+static void fft_callback(void* arg);
+
 int init_volume_filter(AVFilterGraph **graph, AVFilterContext **src, AVFilterContext **sink,
         uint64_t channel_layout, AVSampleFormat inputFormat, int sample_rate) {
     AVFilterGraph   *filter_graph;
@@ -385,10 +387,8 @@ static void *input(void *) {
     size_t len = 256;
     auto *data = static_cast<uint8_t *>(malloc(len * sizeof(uint8_t)));
     auto *block = static_cast<block_t *>(malloc(sizeof(block_t)));
-    block->i_buffer = len;
     block->p_buffer = data;
     block->i_nb_samples = len;
-    block->i_pts = tick;
 
     block->fft_callback.callback = fft_callback;
 
@@ -397,6 +397,7 @@ static void *input(void *) {
         for (int j = 0; j < len; j++) {
             block->p_buffer[j] = i+j;
         }
+        block->i_pts = tick;
 
         filter_audio(p_sys, block);
         tick += 16*1000;
diff --git a/media/travel.lrc b/media/travel.lrc
new file mode 100644
index 0000000..73c68be
--- /dev/null
+++ b/media/travel.lrc
@@ -0,0 +1,70 @@
+[ti:带你去旅行]         
+[ar:校长]         
+[al:]         
+[by:果果1314]         
+
+[00:00.00]校长 - 带你去旅行
+[00:02.00]作词：朱贺
+[00:03.00]作曲：朱贺
+[00:04.00]编曲：王柏鸿
+[00:05.00]缩混：王柏鸿
+[00:06.00]监制：三千
+[00:07.00]制作人：王柏鸿、朱贺
+[00:08.00]和声编写：王柏鸿
+[00:09.00]和声：王柏鸿
+[00:10.00]录音室：Hot Music Studio
+[00:11.00]混音室：Hot Music Studio
+[00:12.00]歌词编辑：果果
+[00:14.00]QQ:765708831
+[00:16.00]爱歌词网：www.22lrc.com
+[00:18.00]
+[00:18.71]今天妆令人特别着迷
+[00:20.90]Oh 我说 baby
+[00:22.83]出门前换上新的心情
+[00:25.21]Oh 我的 lady
+[00:27.13]你喜欢有小情绪
+[00:30.88]像晴天的乌云
+[00:35.51]头发长见识短的惊奇
+[00:37.88]表情丰富令人着迷
+[00:39.81]你的一切我都好奇像秘密
+[00:43.72]安全带系好带你去旅行
+[00:47.69]穿过风和雨
+[00:51.61]我想要带你去浪漫的土耳其
+[00:55.80]然后一起去东京和巴黎
+[00:59.95]其实我特别喜欢迈阿密
+[01:04.34]和有黑人的洛杉矶
+[01:08.47]其实亲爱的你不必太过惊奇
+[01:11.99]一起去繁华的上海和北京
+[01:16.75]还有云南的大理保留着回忆
+[01:21.50]这样才有意义
+[01:25.95]
+[01:42.89]今天妆令人特别着迷
+[01:45.21]Oh 我说 baby
+[01:46.80]出门前换上新的心情
+[01:49.16]Oh 我的 lady
+[01:51.23]你喜欢有小情绪
+[01:55.10]像晴天的乌云
+[01:59.79]头发长见识短的惊奇
+[02:02.12]表情丰富令人着迷
+[02:04.01]你的一切我都好奇像秘密
+[02:07.97]安全带系好带你去旅行
+[02:12.08]穿过风和雨
+[02:15.79]我想要带你去浪漫的土耳其
+[02:19.68]然后一起去东京和巴黎
+[02:24.20]其实我特别喜欢迈阿密
+[02:28.64]和有黑人的洛杉矶
+[02:32.76]其实亲爱的你不必太过惊奇
+[02:36.47]一起去繁华的上海和北京
+[02:41.01]还有云南的大理保留着回忆
+[02:45.67]这样才有意义
+[02:49.55]我想要带你去浪漫的土耳其
+[02:53.45]然后一起去东京和巴黎
+[02:57.77]其实我特别喜欢迈阿密
+[03:02.27]和有黑人的洛杉矶
+[03:06.28]其实亲爱的你不必太过惊奇
+[03:10.49]一起去繁华的上海和北京
+[03:14.57]还有云南的大理保留着回忆
+[03:19.26]这样才有意义
+[03:27.43]还有云南的大理保留着回忆
+[03:35.77]
+[10:00.00]LRC歌词下载：www.22lrc.com 
diff --git a/media/travel.mp3 b/media/travel.mp3
new file mode 100644
index 0000000..da29a07
Binary files /dev/null and b/media/travel.mp3 differ