There is a simple trick to tell your Teufel Raumfeld Connector² to ignore certain folders while parsing your media files: Just add an empty (i.e. 0 byte) file with the name

.raumfeld-ignore

in all folders you don’t want to be parsed. This may work on other Raumfeld devices as well but I cannot verify this. By the way: This is similar to Android. The filename to use here is .nomedia