If after running 3D SPACE MOB, you discover that the music isn't playing and/or the sounds aren't working, please run the SETUP.EXE file which will be in the program's directory. If you used the default install directory, then you will find this file by: 1. Click the My Computer icon on your desktop. 2. Select the C: drive 3. Select the ULTISOFT folder. 4. Double-click the SETUP icon. This will run the program's setup program and will help you get the sound configued correctly. If you need assistance, please email us at: support@ultisoft.com