Working with audio on GNU/Linux can be really complicated, but most of the time it is just a matter of compiling a kernel, installing, settings some packages and also using software the right way :-)
It is still a work in progress. If you have comments, experience to share... do not hesitate to send me an E-Mail and I will update this documentation.
Also keep in mind that it exists many different ways to succeed in setting up, installing and using software, and I do not know them all. So I will describe what I use and how I do, but not how you must do.
I warn the readers that I am French and that my English is poor: so I do appreciate any correction!