Arduino yun read files from sd card and store in an array

Hi

i need help i want to read all the files in my sd card, and then store it in an array as an example

Array 
1 <= 1.mp3
2 <= 2.mp3
etc...

i am using an arduino yun and it doesn't seem to be working for me i feel as if i have tried everything

can someone help me please

thank you