Thank you very much for your support.
The location of the SD card is in the file <user id>/.VirtualBox/Harddisks/youwave_vm01.vdi. This file is mounted inside YouWave. There is no other direct access at this moment in YouWave. But another user has posted a tip on how to have access to this vdi file when YouWave is not running: http://youwave.com/forum/index.php?topic=181.msg454#msg454
. A file sharing feature that will allow you to import and export files from/to the SD card is in our plan.
Another tip, if you backup this file, you basically backup your android SD card. You can even try to use different SD card files. Do you see a *golden.vdi file there? It is the empty SD card file. If you want to clean up your SD card, copy the youwave_vm01_golden.vdi to youwave_vm01.vdi.
BTW, some of your past suggestions are under work.
Thank you again.