Hello Gabriel!
I was able to reproduce that Finale 2011 brings VE Pro to show "Mixdown" in the lower right corner. Nevertheless the CPU usage was not high according to the Windows 7 Task Manager and the playback was fine here. With Finale 2012 the CPU usage is shown correctly in VE Pro. It's hard to say what causes the clicks and pops. Which OS are you using? Which application actually uses the most CPU? To find out details about this take a look at the Windows Task Manager or the Apple Activity Monitor. Please also make sure to use the latest versions of Finale 2011 and our software.
http://www.vsl.co.at/en/68/428/1093.vsl
Best regards,
Andi
Vienna Symphonic Library