Dave:
Nick answered part of your question. As for playback on Finale, I don't use it so I can't be sure. But using Sibelius, playback is perfect. I don't use a keyboard, I just write the notes in the score. With the proper performance patch loaded and the legato tool in place between Sibelius and GS, I just hit play and it plays legato. No tweaking, importing into sequencer, etc. For the concert hall ambience, I import the midi file from Sibelius into Sonar. Then I record each track separately using the capture to wave feature of GS (Sonar will send midi start messages, so everything is synchronized). I then move the resulting audio files to Samplitude and assign each section, i.e., 1st violins, 2nd violins, etc., to its own aux bus. I use Cakewalk's FX3 (Soundstage) for placement in the hall, then apply the Concert Hall 1 impulse from the GOS update to the master, and sometimes, as with percussion, add a little to the aux bus. You have to be careful with the FX3 to capture only positioning and early reflections, but this can work very well. If you do it correctly, the resulting sound compares favorably with a commercial orchestra cd. As Peter Alexander has noted, Samplitude has the best audio engine on the planet and with these samples and Ernest's impulse, it is fantastic. You can't just change patches to switch off the legato tool. It stays on and if you use a regular patch, such as staccato, it will play but an octive higher and some notes won't sound. You will need a separate track for cube instruments, and I hope the VSL team will give us another option soon. But whether they can do that or not, the bottom line is that the performance set is revolutionary and the closest anyone has come yet to getting a "real" performance from a computer and samples.
Good luck,
Jim Rowell