Mp3 kit k8095

Just completed mp3 kit - K8095
Have tried two different 1 GB sd cards with music files.
LCD states “No Files Found, Replace, Restart”.
Any ideas about my problem.
Also, I mounted the sd card vertically.
There seems to be more pins on the sd holder than the pcb.
Any good pic of holder mounted to pcb.

Are the files on the card with .MP3 extension?
Is the vertically mounted card holder placed according to this picture:

Here is a picture how the holder is mounted on the main PCB:

Thank you very much for the reply.
Especially the pic of the card holder on the pcb.
I had installed it correctly but it was reassuring.
I had built the unit so carefully, I was dumbfounded when it did not work at the get go.
It was my fault totally.
I thought my files were .mp3 - they were not - but .wma.
It is now working fine.
Now to learn all the features.
Great kit.
Charles
Canada

Just found this one. there are jpegs on my sd card, the rest has the MP 3 Ext.