Hey man, sorry for being so unclear, I didn't make myself understandable.
Certain parts of my sound get sent to my headset (skype, teamspeak, ingame sounds) but the rest (music I would play with banshee, youtube) all gets sent to my laptop's speakers. When I open Alsamixer it shows as a 'USB mixer' and when I try to change the settings (Headphone, bass, treble and mic) it doesn't do or change anything. Maybe I could fix it by downloading the logitech sound support drivers. Problem is that when I download them and run them with wine windows loader I always get the message that the software isn't supported for my system. No clue though which one I should use then. Tried both windows 8 versions and the windows 7 64-bit version here : http://support.logitech.com/product/...adset#download
Thanks again for taking your time to help me!