Advanced CSV export formatting in MS Access
If you're just trying to put a line between every line after you've exported your file then one solution would be to create macros in Excel. By tweaking your auto-generated macros code with VBA in Excel you can automate all the process and use the same solution in the future with a click of a button.

But if you're familiar with programming languages then it might be much more easier to manipulate your files in scripting languages such as Python etc..

*CSV files are seperated by commas hence "comma seperated values."