Raspberry Pi Automated Upload

I have a raspberry pi device that records some audio from midnight to midnight each day and stores the file on the SD card. I then have another raspberry setup with owncloud installed. I am attempting to automate the transfer of the recordings each day at a set time to owncloud. I have attempted this using webdav and rsync, but as my server has 50gb + of data on it attempts to copy all this data to my webdav folder on my 16gb sd card.

I was hoping somebody had another idea of how I can do this? The recording device and owncloud device are currently on the same network but I am eventually looking to move the recorder to a different network...

Thanks in advance!

Nobody? Is this an something that owncloud doesnt facilitate?