I just spoke with Scott about this, but for the benefit of other folks who might be similarly stuck, I wanted to provide some clarification. Soundbooth CS4 used to provide a way to Dynamic Link sequences from Premiere Pro CS4, which made creating scores to match sequence length a trivially easy task.
Soundbooth CS5 is essentially Soundbooth CS4 with a couple enhancements bolted on, but the core of the application is the same. Because of this internal version mismatch, Dynamic Link doesn't work between Soundbooth CS5 and Premiere Pro CS5, so you can't bring in sequences. You're limited to importing single assets.
In this case, you'd need to render out the whole sequence as a single asset from your PPRO CS5 project and bring it into Soundbooth CS5 in a new multitrack project, then add the score and match up the length.
Soundbooth will take in video assets, but if you prefer to just render out the audio here's a screenshot showing how to export just the audio from a Premiere Pro project.
Best regards,
Chad
