Hmmm, and what about the audio I/O settings for your "tournament".
Some programs, and i guess even 'crazy' video games and similar stuff
belong to that sort, offer a preference setting for the input device (if
you are allowed to talk to your computer) and playback (if your machine
is crying back ;-)), anyway, check out the program documentation.
On many linux machines the default for in and output is "/dev/dsp".
If your program is not audio interactive you will only need the correct