How can I edit the properties of the paypal buttons created by the cart? I use linklokipn to protect download files - it obscures the url where the download resides, and the link only lasts a given number of minutes, among other things. This keeps my downloads safe, but I can't figure out how to modify the buttons in the plugin cart to accept the linklok code :(
http://wordpress.org/extend/plugins/wordpress-simple-paypal-shopping-cart/
