Tracker 4.42

### 4.5.9: Silicon Graphics port

Maybe you don't have any audio software. If you can't find audio include files/libraries that's a good bet.

Irix 5.3 includes the audio package as a default again. If you were using Irix 5.2 or lower, upgrade. If you are using Irix 5.3, check that the audio has been installed. Also, the standard sgi ``make`' is crippled. See Generic problems.

If the audio output sounds like garbage, you probably botched the ``typedef`' of `SAMPLE`. Chars on Silicon Graphics are `unsigned` by default, and `SAMPLE` needs to be `signed char` [1]. This can happen very easily if the ``config.h`' tracker uses is not the Silicon Graphics one. Remove the ``config.h`' in the main directory, and let make replace it with the correct one.

[1] I have not put this in every ``config.h`' for compatibility with old K&R compilers