Default [Q] T-Mobile LG Optimus L9 P769 Cant transfer files from computer!?!

First off, I Used Vroot to Root my phone about 2 days ago, Installed SuperUser and all was well. I never tried transferring music before I Rooted it either. Now when I Connect it to my PC, I Installed all 3 Connection Methods Software, and my computer even says LG-P769 under Drives, but when I try to use Windows Media Player to Sync music It just gets stuck on 0% and nothing ever happens, I then tried manually transfering the Files into the MUSIC folder on the internal storage of the device, and at first a popup window states" You can transfer these files but your device may not be able to view or open them." I then click ok anyways, and it also just gets stuck on 0%. Is it the Root stopping me from this, am I missing something here?