Model :

Hardware Version : Not Clear

Firmware Version :

ISP :

hello,
my modem tp link 8970 is connected to my wifi tv sony.In my harddisck I saved all my CDs and I would listen to them through facility that is connected to tv.In hard diskd each CD includes the cover and all the tracks are tagged with the image of the cover.If I connect the hard disk directly to the TV via the uSB port I can hear the songs and see the cD covers while listening to the music, but if I connect the hard disk to the uSB port of the modem / router can only hear the music but all jpg TV does not see them, even when in the TV media player instead of "all" choose file "all images"
I have done something wrong or is this normal?
Thanks