We are running an experiment that presents a series of screens (via survey pages) accompanied by short audio clips (mp3 format). The experiment has three conditions, and each condition uses 11 clips. In creating and debugging the script, my student and I have run it off the web many times. Now that we are asking people to test it from their own computers, we find it does not work. After downloading the audio files, the program stalls and does not show the Start button that normally appears below the title of the experiment.
It is hard to replicate these testers' experiences because I cannot find a way to delete the downloaded files from my own computer to force the script to download all of the files anew. Where are these files stored after downloading?
Based on my reading of other posts, it does not seem possible to conditionally download a subset of the audio files, e.g., only download the 11 files for Condition A if that is the condition into which the <variables> element places the subject. Is that true?