fix 中文编码格式为 UTF-8

inc/mp3_tag.h

@@ -67,12 +67,12 @@ typedef struct
  */
 typedef struct
 {
-    uint8_t id[4];      /* ֡ID,ΪXing/Info */
-    uint8_t version[2]; /* °æ±¾ºÅ */
-    uint8_t delay[2];   /* ÑÓ³Ù */
-    uint8_t quality[2]; /* ÒôƵÖÊÁ¿,0~100,Ô½´óÖÊÁ¿Ô½ºÃ */
-    uint8_t fsize[4];   /* Îļþ×Ü´óС */
-    uint8_t frames[4];  /* Îļþ×ÜÖ¡Êý  */
+    uint8_t id[4];      /* 帧ID，为Xing/Info */
+    uint8_t version[2]; /* 版本� */
+    uint8_t delay[2];   /* 延迟 */
+    uint8_t quality[2]; /* 音频质�，0~100，越大质�越好 */
+    uint8_t fsize[4];   /* 文件总大� */
+    uint8_t frames[4];  /* 文件总帧数 */
 } MP3_FrameVBRI_t;
 
 /**