Now, you can sell virtual goods via the physical good interface though. You'll just have to store the file yourself and deliver it on payment.
There are a few difficulties glassuser and I have to figure out before we have it down. It not quite as simple as it might seem. For example, we need to parallelarize a lot of things so the server does not lock up for users when someome is uploading. Also we need to decide if we can afford offering this service for free. Bear with us and we will get it done. Thanks for the feedback!
Sounds good, I am looking forward to this feature, even if it is not completely free.