The goal of this randomized controlled study is to establish the long-term effect of pelvic floor re-education using biofeedback and home training for men with chronic pelvic pain. The main questions it aims to answer are if pelvic floor re-education using bio-feedback and home training will give a long-lasting improvement in symptoms, assessed with a validated symptom score (the National Institute of Health - Chronic Prostatitis Symptom Index) and if an improvement in symptoms can be correlated to objective measurements of pelvic floor function. Participants will be asked to do pelvic floor exercises daily during six months with additional sessions of bio-feedback training. The control group will have no changes in their on-going treatment for their chronic pelvic pain and will be offered to enter the treatment group after six months.