Use database from Upnp and local disc

[kisond]

Question

Could you be so kind and support me how to set up mpd with two databases (Upnp and local)
I use plugin Upnp (works properly) but I would like also read files from my local disk on the device where is installed mpd.
It means if I use both database one from Upnp and second for example from “db_file” or plugin “simple” mpd always inform me that can be possible only one database.
Do you have any recommendation how to set up config file of mpd.

thank you very much