How to export simulink model to c code

I'm trying to get c code from a simple simulink model.

The model consists of a 'From Wave File' and a 'To Wave File' block. Later I want to perform some calculations on the wav content. (The model is attached).

I have read these two tutorials and tried to adopt that on my model, but if I click 'check model' I only get error messages that I do not understand.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120014980.pdf

http://www.mathworks.de/matlabcentral/answers/96190-how-do-i-convert-blocks-in-simulink-library-to-c-c-code-in-simulink-7-4-r2009b

Error:

1. Identify block output signals with continuous sample time and non-floating point data type,
2. Disable signal logging,
3. Check sample times and tasking mode,
4. Identify qustionable fixed-point operations.

The aim is to compile and run the c code without dependencies on Simulink.

Can anyone explain how this works?

I'm using Matlab/Simulink R2009b.

Thanks

[Kaustubha Govind]

I am unable to open the PDF from nasa.gov, but which tool do you run 'Check Model' from? Here is documentation for the basics on generating C code from a model.