Is there a way to get music, videos, pictures etc. from my computer to my phone (or vice versa) without a usb connector?
I have a Samsung android phone, so is there a data storage app, like dropbox, that would work?
There's also something called Samsung Kies, which if I remember does something with data storage, but I can't remember what or how it works.

Any way, thanks for any help.

uhm this is a usb connector,but you can buy a bluetooth usb adapter to plug into your pc and xfer files wirelessly through that, its just slow a fuck...

Use Google drive. Download the app on your phone, download the program on your PC. It will create a folder on your PC, and if you drop anything into that folder it will automatically sync with your google account, and will be accessible from your phone when you are connected to the internet. You should be able to save it to your phone from there.

transfer files over wifi

try use an app called "airdroid"
it allows u to install app thru pc,transfer files,take screenshot of ur phone

Google drive or some type of data cloud that you can upload / download to and from.

Forget about all the posts above..
There is a VERY simple way you can make your phone to be recognized as a storage device on your computer, then just drag whatever you want to the folders on your phone..