Hello, I have an iPhone 3GS. All of the music on my iPhone is from my CD collection, which I ripped to my external hard drive using AIFF files. However, when I transferred my music to my iPhone, I converted the songs to 128 kbps AAC in order to save space; but, I noticed that, when I play music from my iPhone in my car, the songs are considerably less louder than the CD I burned them from (I did a comparison to hear the difference). In fact, I can turn the car stereo right up to maximum volume and the music from the iPhone is not unbearable (as it is when I play the CD at half volume in my car). To note, I am using Bluetooth to stream my music from my iPhone and not the aux or USB output. My question is, how can I make the music on my iPhone louder? Is there a volume booster on the iPhone that I can use? How about if I transferred the AIFF files as is, will they be louder than the converted 128 kbps AAC files? I'm not looking to go deaf, just to get into the music a little more while driving. Thanks for your help.