I just ordered a 30GB Rio Car Player from Sonic Blue. I spoke to one of the customer support people and was assured that they still had some and that I would get it. The question is about the volume control in my installation. I was unable to purchase a tuner and I cannot pay what people are paying on Ebay so I am going to install this with my current CD/Tuner head unit. It is an Alpine and has subwoofer out as well as a few other things I wanted to keep anyway. My Alpine has an Aux input that I will be using. Is there any way to set the volume (either in hardware or software) so that it cannot be changed from the Rio? In other words, I want it set to optimum and then only have to deal with the volume control on the Apline unit. Thanks for any help with this. I searched the FAQ without success before posting so if I missed the answer to this somewhere, I apologize.