diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..39b137a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+Install
diff --git a/lib/logic.lib b/lib/logic.lib
index 5c03b7f..6241af9 100644
--- a/lib/logic.lib
+++ b/lib/logic.lib
@@ -1,9 +1,18 @@
 #!/bin/bash
 
 
-SET_GUI_BIN="zenity"
-SET_CONV_TOOL="ffmpeg"
 
+if [ ! -f /usr/bin/yad ];then
+  SET_GUI_BIN="zenity"
+else
+  SET_GUI_BIN="yad"
+fi
+
+if [ ! -f /usr/bin/ffmpeg ];then
+  SET_CONV_TOOL="avconv"
+else
+  SET_CONV_TOOL="ffmpeg"
+fi
 #convert youtube videos to mp3 with zenity progess bar
 backend()
 {