Sorry for raising the thread but I believe Earth 2140 has an issue with the cycles value.
DOSBox 0.74 after using Reset Options to make sure all settings are at default.
While running the installer autodetection works and it selects Soundblaster 16 at 7 1 5 and 220. But then testing the sound card produces a "failed to initialize" message. I changed cycles from auto to 20000 and the sound test worked. However the installer locked up before starting the video mode test. I had to force DOSBox to close.
I then tried 40000 cycles and both test worked but it looked slow. Next I tried 60000 cycles and this also installed while at a good speed.
Still at 60000 cycles I attempted to run the game. The sound card failed to initialize and DOSBox returned to the prompt. The same happened with 40000 cycles. I then tried 30000 cycles and was able to start playing.
I used 60000 cycles to run setup.
I use 30000 cycles to play.
I still don't here any music in game but now the sound effect are there at least.
Ah ha, music is off by default. I had to turn it on in Game Control once I selected my campaign.