Hi Stan

You can change the settings in the Playback settings dialogue box/

For windows, click on the speaker icon next to the playback controls.

For Mac, click on expand on the playback controls.

Change the settings in the "Playback Region" section

Manual page for Windows -> https://usermanuals.finalemusic.com/FinaleWin/Content/Finale/Playback_Settings.htm 

Manual Page for Mac -> https://usermanuals.finalemusic.com/FinaleMac/Content/Finale/PLBAKCNT.htm 

Cheers...

Daz :o)