When I tell an application I don't want it to automatically download my purchases, and I ONLY want it to download over Wi-Fi, I do NOT want to find my phone's internal memory has suddenly run out of space because your POS application has decided to download a Handle box set using my 3G data plan.
I'm uninstalling the Amazon MP3 player, posting a negative review that outlines my issues, and logging my complaints on your customer service site.
And the part you'll actually care about? I'm not buying anything from the Amazon MP3 store. Hell, I'm not even going to buy CDs from you unless they are flat out not available at all through other retailers.
A disgruntled and unsatisfied customer