@amr Yes, this is the only point which worry me with this wonderfull tool, I do have to remember to mount everything before to launch it, else I can't add anything to my playlist for the next 15mns, with a big cost of time, electricity, hard disk.
At this point I'm thinking to replace the strawberry command with a shell script to try to mount things before any launch, and failed if it's impossible, which mean I will not use strawberry for anything else that my own collection.