/// <summary>
/// Add all new tracks found in inputfiles
/// </summary>
/// <param name="inputFiles"></param>
public void AddTracks(IEnumerable <string> inputFiles)
{
var albumReader = new AlbumReader();
var existing = Tracks.ToLookup(_ => _.Path);
var toAdd = albumReader.GetTracks(albumReader.GetAudioFiles(inputFiles))
.Where(t => !existing.Contains(t.Path));
foreach (var track in toAdd)
{
track.Oid = this.GetNextOid();
}
Tracks = Tracks.Concat(toAdd)
.OrderBy(_ => _.Album)
.ThenBy(_ => _.TrackNumber)
.ToArray();
}