mr foot, you have what is called an "impedance mis-match" (qv). iirc, your headphone jack on your sansa "clip" is only somewhere between 4 - 32 ohms while the mixer is 10k - 50kohms or more. btw, i had the old 2 gigabit sansa clip and loved the sound quality until my dear wife of 50+ years stepped on it. sometimes i still miss her. i'm afraid to ask but, what is your clip's storage capacity?