Can I delete anything from here as it take up 4GB and my laptop is running low due to my music and pictures.

I've had a browse through and a lot of the folders, such as WMP10, have many duplicate files just stored under different folders. The WMP10 folder has 25 sub folders each containing the same two files - a cva file and the wmp10 setup file (12mb). Is it safe to delete any of them or the folder as a whole?