btbowhunter if you bought the western-rivers you did not need the extra chip or the usb cord. those yo-yo's at the store should have given you some instruction on the unit. or maybe they did not know. but they are very easy to use. the unit already has thirty minutes of storage space. that is more than enough. the only reason to buy the extra chip is if you can not remove the free sounds yourself. all you do is save the free sound on your computer to make room for the changes. i did not think much of the free sounds that is why i loaded all my own tapes and sounds. foxpro is a nice caller but the sound loops are to short. i think you can only set them up for a 15 or 30 second loops. which i think is way to short. some of my best recording are 5 and 10 minutes long and were recorded in the field. but the foxpro steps threw the sounds easier than the western-rivers. they both have good and bad points