Ask if you want to remove the files.

oga-converter.sh

@@ -39,3 +39,22 @@ do
         ffmpeg -loglevel warning -i $f $OUTFILE.oga
     fi
 done
+
+while true
+do
+    read -p "Do you wish to delete the old files? (y/n) " ANSWER
+    case $ANSWER in
+        [yY]* ) echo "Deleting the old files..."
+                for f in $@
+                do
+                    rm $f
+                done
+                echo "Done."
+                break;;
+
+        [nN]* ) echo "Goodbye!"
+                break;;
+
+        * )     echo "Please enter a valid option."
+    esac
+done