Hey,

how can i mount my music-folder from my pc on my n810? in the filemanager i can see my pc over network, but there are no folders if i open it.

on my dreambox (linuxbased dvbs-receiver) i can mount the musik with the following commando:

mount -t cifs -o user=***,passwd=*** //192.168.178.22/musik /mnt/musik/

Does this also works on maemo?

One way is to use Wizard Mounter.
See this post.

Adding my agreement on Wizard Mounter. I use this all the time to connect to my media share for music, movies and whatever else. Might I also suggest GPE Filemanager. Makes it a bit easier to navigate through the mounted folders.