forgive me if this is already a post, i'm just super frustrated with this Nexus 7 and honestly at this point just need help didn't feel like searching through past post. :/

I'm trying to transfer music from my computer(pc) to my nexus via a usb cable.

i plugged it in, selected MTP, and selected "open device to view files" when promoted by my computer.

so far i've tried dragging and dropping files from itunes, windows media, and even the desktop but nothing will copy in.

add this to the fact that i have yet to find any real uses from my nexus that i can't already do on my phone (mind you i have the FIRST evo :/ ), and you can understand why im ready to chug this thing at the wall or resell it.

someone help me out?