template file naming: code complete. Clean up and testing remain

LibationFileManager/LibraryBookDto.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace LibationFileManager
+{
+    public class BookDto
+    {
+        public string AudibleProductId { get; set; }
+        public string Title { get; set; }
+        public string Locale { get; set; }
+
+        public IEnumerable<string> Authors { get; set; }
+        public string AuthorNames => string.Join(", ", Authors);
+        public string FirstAuthor => Authors.FirstOrDefault();
+
+        public IEnumerable<string> Narrators { get; set; }
+        public string NarratorNames => string.Join(", ", Narrators);
+        public string FirstNarrator => Narrators.FirstOrDefault();
+
+        public string SeriesName { get; set; }
+        public string SeriesNumber { get; set; }
+    }
+
+    public class LibraryBookDto : BookDto
+    {
+        public string Account { get; set; }
+    }
+}