If all your products are digital, then the quantities will always be 1 and it should hide the quantity dropdown/field,
example.
If there's no prices, the 'set your own price!' label can be commented out from skin/reboot/customer/main/products_t.tpl
You can remove the 'buy now' buttons in general settings > appearance, or customise skin/reboot/customer/main/products_t.tpl - OR - skin/reboot/customer/main/buy_now.tpl
The 'add to wishlist' button has just been added for related/also bought tabs, see attached file (skin/reboot/customer/simple_products_list.tpl),
example.