Hello, I am looking to get FM Radio (with memory buttons) on my receiver. The receiver will need to be one of the smaller 10" ones to fit in my space (here is the one I currently have). Do they make something that can be plugged into my current receiver or is there a better one I can replace it with for under $200? I did not realize the small ones don't come with the memory buttons! I like being able to just walk up and flip around the different stations. Thanks!