Here are the MP3 files for all the songs in the String Basics book so you can download the ones you want to use.
028. Steps to Learning Composition.mp3
029. Clouds of Many Colors.mp3
031. Merrily We Roll Along.mp3
032. Platform Shoes - Duet.mp3
035. Five-Note Delight - New Step for Bass.mp3
038. Countryside Sunrise - Duet.mp3
044. Beginning to See B - Duet.mp3
045. Old MacDonald - Sight Reading Line.mp3
047. The Escalator - Steps to Learning Theory.mp3
077. Three-Speed Mastery - Memorization Line.mp3
080. Waves - Sight Reading Line.mp3
081. Bow Speed Is Key - Steps to Learning Theory.mp3
083. Hill Country Memories.mp3
087. At Pierrot's Door - Duet.mp3
089. Bile 'em Cabbage Down.mp3
090. Quarter Note Fever - Duet.mp3
095. Sauntering on Saturday.mp3
101. D Major Interval Etude.mp3
103. Scotland's Burning - Round.mp3
105. 4th Finger Duet - New Step for Violin & Viola.mp3
106. Tuning 4th Finger - Duet.mp3
107. Theme From Symphony No. 9_ _Ode to Joy_.mp3
109. Steps to Learning Theory.mp3
110. Fox and Goose - Sight Reading Line.mp3
112. Brandenburg Reflections.mp3
114-119. Skills Demonstration Concert.mp3
114. Plucking Open Strings for Performance.mp3
114. Plucking Open Strings Demo.mp3
115. Plucking _Twinkle, Twinkle_ for Performance.mp3
115. Plucking _Twinkle, Twinkle_ Demo.mp3
116. Bowing Open Strings for Performance.mp3
116. Bowing Open Strings Demo.mp3
117. D Major Scale - Orchestra Arrangement.mp3
118. Lightly Row - Duet for Performance.mp3
118. Lightly Row - Duet Demo.mp3
119. Orchestra March - Orchestra Arrangement.mp3
123. Steps in G - Steps to Learning Theory.mp3