diff --git a/README.md b/README.md
index 5a368f2..6a242d2 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,11 @@ Then, model the character:
 - Start the print, wait the printer to pause and insert an NFC tag in the compartment. Stick it using the adhesive side so the 3D printer cooling fan does not displace it during the print.
 - Restart the print and let it finish.
 
+### Add the MP3 file to the SDCard
+
+Add the MP3 file to the sdcard, in a directory named like the integer you placed in the tag, with **a single** leading zero.
+The folder to be played is selected based on the TAG content, but may contain more than one MP3 file. In that case, the files must be named as integers with **two leading zeros**, from `001.mp3` to `999.mp3`.
+
 ## NFC Tag format
 
 I used Mifare ultralight tags.
diff --git a/accessories/.gitignore b/accessories/.gitignore
new file mode 100644
index 0000000..5c1608e
--- /dev/null
+++ b/accessories/.gitignore
@@ -0,0 +1,2 @@
+*.stl
+
diff --git a/accessories/manuelita.scad b/accessories/manuelita.scad
deleted file mode 100644
index d16a3ae..0000000
--- a/accessories/manuelita.scad
+++ /dev/null
@@ -1,7 +0,0 @@
-use <character_retainer_platform.scad>;
-
-character_retainer_platform();
-
-scale([0.65, 0.65, 0.65])
-    translate([-56, -60, 2])
-        import("/home/danieleverducci/Scaricati/GustavTheTurtle.stl");
diff --git a/image.png b/image.png
deleted file mode 100644
index 5fdf044..0000000
Binary files a/image.png and /dev/null differ