I have purchased a 2.5 to 3.5 adapter AND using it with the HTC Mogul supplied mini usb to 2.5mm adapter, I only get one channel. I use this to hook up my mogul to a tape adapter to to play music in my car. I only get one channel, I use the core player and just put mono join to get both channels but the real question herte is if I buy a mini usb to 3.5mm adapter will I get stereo? Please advise. Thank you.