mini DLNA and visible files

[.H.]

FreeNAS 8.3 / 64 bi.
Proliant HP 1.50 GHz,8G
Raid5 zfs

Hi,

I've installed DLNA plugin.

i use a BOx for my tv

I can see movie, jpg, but impossible to see mp3 files.

I see the jpg who are in the same folder, but not the mp3 files.
What is my problem ?

thanks ( i hope this posts respect the rules, now )