From the Configuration Menu, select Set MIDI in. If these resources are not ready then CD Jam may not operate properly. There are a few simple things you can do to check that the basic multimedia capabilites are in order. Make sure that you can play CD's on your multimedia computer using the programs that come with Windows. When you can sucessfully play a CD, then go on to step 2.
Sound cards have more than one connector.
Make sure that volume controls are not turned all the way down. Windows95 can have a master volume control that is available from the taskbar. Make sure that the CD device driver is installed properly. Make sure that you can play a MIDI file on you multimedia computer using the programs that come with Windows. Click on the start button of the Media Player and you should hear the tune.