Volumio WebGUI on local machine


I just installed Volumio 2 RC1 on my Raspberry 2 with Hifiberry DAC+, everything works great!

For my project I added a 7" Multitouch-TFT directly to the Pi, a OpenUPS2, a low-noise regulator and all into a nice acrylic case. I want to use it as a standalone Music Station and It already worked on Volumio 1.55.
I now just installed LXDE and it boots into the graphical frontend with the user “volumio”.
After starting Iceweasel and typing in “localhost” or “”, it says “unable to connect”.
If I’m trying to connect via LAN to the Pi I can see the page without problems.

I’m quite new to linux.
Would be great if someone can help me fix this issue.