Luath Scots Language Learner
Colin Wilson works as "a saftware ingineer wi a weel-kent telecommunications firm, writin saftware in C++." He's also the author of the Luath Scots Language Learner: An Introduction to Contemporary Spoken Scots, a text being promoted as the "first-ever Scots language course." The book is being marketed with an accompanying 2-CD pack containing recordings of the material used in the text (though it would seem one needs to special order the CDs in the US). From the editorial review:

This work is suitable as an introductory course or for those interested in re-acquainting themselves with the language of childhood and grandparents. The book assumes no prior knowledge on the reader's part. Starting from the most basic vocabulary and constructions, the reader is guided step-by-step through Scots vocabulary and the subtleties of grammar and idiom that distinguish Scots from English. An accompanying audio recording conveys the authentic pronunciation, especially important to readers from outside Scotland. The course is based on General Scots with a slight emphasis on the North-East and contains an introduction, 25 graded lessons, an English-to-Scots vocabulary list, and appendices with verb tables and similar material. Each lesson itself contains dialogues, vocabulary, grammatical explanations, exercises, and - most importantly - a section giving background information about life in Scotland, for the reader to understand the material in its cultural context.

I browsed through the book at Borders the other day, and, oh, what a relief it would've been having my own copy before I tried to read anything by Irvine Welsh.

You can listen to the sound of Scots by following the soundfile links at the Scots Online site.