Default [Q] KK 4.4 Restricted Profile - How to copy data from PC?

Hi,

On my Nexus 7 2013 I have set up restricted profile for my daughter. But now I have problem to upload data (music, video) for her from the computer over the usb cable.
Any suggestions without rooting?

Thanks, Otas

Update:

Found this: http://forum.xda-developers.com/show....php?t=2477671 Will try if it works.