Fixed some bugs and added Random Classic

pkg/api/music.go

@@ -44,6 +44,11 @@ func (m *Music) GetRandomSongLowChance(ctx *gin.Context) {
 	helpers.SendSong(ctx, song)
 }
 
+func (m *Music) GetRandomSongClassic(ctx *gin.Context) {
+	song := server.GetRandomSongClassic()
+	helpers.SendSong(ctx, song)
+}
+
 func (m *Music) GetSongInfo(ctx *gin.Context) {
 	song := server.GetSongInfo()
 	ctx.JSON(http.StatusOK, song)