As far as the 4 mb.Whooo!Then you are going to really have a Ga awful sound when you bring it down to 400 kbs. For people who have a cassette boom box, you can record your voice or vocal musical talent on the box and get a 1/8 stereo pin cable about 2 to 3 feet long to plug into your head phone jack on the box and adjust the volume to meet the needs of you recording it on the computer threw the sound cards line in or mic input jacks.You can get the cable at your nearest Den Tracy's Radio Shack for about 2 to 3 bucks.Hope any of that helps.