Complex sentence: The MS-DOS version also has vocals in the background music missing if the audio system is configured for Ad-Lib sound due to MIDI limitations, however the vocals are audible if the game configured for SoundBlaster sound.
Split into simpler sentences: The MS-DOS version also has vocals in the background music missing if the audio system is configured for Ad-Lib sound due to MIDI limitations. However, the vocals are audible if the game is configured for SoundBlaster sound.