Load the 'audio' file first and adjust the sound.
Pause - backup and restart to be familiar with the sound controls.
Many of the Greek / Hebrew words are difficult to understand in English and replaying will help.
Then load the 'text' file to follow the actual text.
The 'highlighted' text verses are cross referenced in Biblica.com and you may 'pause' the 'audio' to access this source for your notes. This is a very powerful resource tool.
When you are finished it will return to the 'text file.