Hi, Just to give a status update on my DVD-Audio authoring program (dvda-author), the latest "alpha" release now includes the following features: * 9 Groups of tracks, each group containing up to 99 tracks (the DVD-A limits) * 16-bit and 24-bit Stereo * 16-bit mono (24-bit mono may work, but is untested) * All 6 DVD-A samplerates supported (44.1KHz, 48KHz, 88.2KHz, 96KHz, 176.4KHz and 192KHz) * Gapless playback * Native FLAC support (use FLAC files as input) I'm afraid that it still doesn't support multi-channel, but that will come. It's a low priority for me because I only have a stereo setup. It can be downloaded from here: http://dvd-audio.sourceforge.net/alpha/ Regards, Dave.