How to make a repeating material?

I have an image of a material that I would like to use. I know how to import the image and create a material from it but obviously its tiled and the image I have is not designed in a repeating style so there’s a fairly clear line between the tiles. I can enlarge the tile size but this blurs and distorts the material. Is there any way to either make the line between the tiles less noticeable or somehow make the material a repeating pattern? I imagine this is probably something the artist has to design for from the start but if there’s any fix that would be great! Thank you!

The Image: http://deccacontract.com/img/finishes/308-satin-dark-bronze.jpg

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