Translation of vorausbezahlt

In the meantime I am listening to some Spanish CDs. They are intended for the car, but no one can tell you when to listen to it, how many times and how often. Please understand that I work a lot.
The advantage of this change is that: 1. it improves the response time after every asked word by double. 2. Some do not want to save their lessons, they just want to test it without results being collected...
For quite a while we were considering to offer a downloadable version of Vocabulix. I could put a popup screen where it says: 'wanna download a Vocabulary Builder or continue with our online lessons?'.