Airdroid is what I use, but if you don't like that, there's a way to mount using ES File Explorer, so you can view the files with Windows Explorer.
Open ES File Explorer, and on the top right press "Local". Choose FTP. Then press the menu button and then settings. Scroll down to Remote Settings, and tick "Remote Manage".
You'll now see the IP address of the phone. Open Windows Explorer on the PC and then enter the address. You can now access your phone files.
You can create a shortcut to this by right clicking "Computer" on the left, and adding network location. Follow the wizard and then it'll appear under "Computer" with your harddrives. You now have a shortcut to access your phone files whenever you want with Windows Explorer

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It's a long way to setting it up but once that's all done all you need to do is start the app and click the shortcut in Windows in order to access your files.