Default [Q] Phone can't read files.

So, last night I flashed doomlord kernel and Xplaystation. I'm still a noob in this kind of work. When I plugged the usb from my pc to my phone, a pop up appear on my pc, it says' Xperia Play is connected" but when I checked 'my computer', my phone was clearly not connected to the pc. So, I had to go to recovery to mount usb. I've copied some songs and pictures from the pc to my phone. The walkman player cannot read the songs in my phone and also the gallery can't read any picture I've pasted into my phone. Help!! I'm just a kid.