Hello,
No doubt the expansion with audio and the line by line audio transcript are among the best features in GermanPod101. I suggest in order to full utilize these features to integrate them with the word bank and introduce a new feature in GermanPod101: the phrase bank.
The purpose is to allow the user add certain phrases in the expansion list he feels new to him to a "phrase bank" with their audio so that he can listen to them again quickly and test himself in them.
By fully integrating the word bank and the phrase bank, I suggest to add an option in the word bank to let the user listen to the phrase in which he encountered the word from either the line by line lesson transcript or from the expansion example. That would be a great help in memorizing the word.
Another feature needed in the expansion section is to let the user add single words in the examples into the word bank directly as in the main dialog of the lesson.
Tareq