Hi I'm a new user of NW-E507 and I have found that my unit plays songs at pretty low volume. I live in Spain, so I suppose that my unit is affected by the nasty volume limitation that exists here in Europe. I have read that in certain walkmans you can enter in service mode and disable this limitation. Do anyone know how to enter in NW-E50* or NW-E40* service mode or how to change the volume limit? Thanks!