Are your permissions properly set, especially for devices? LFS uses groups to make these settings easier, but it also adds the step of adding users to groups to allow access. A simple <command>usermod -G audio <replaceable><user></replaceable></command> may be all that's necessary for that user to have access to the sound system. Any question that starts out with <quote>It works as root, but not as ...</quote> requires a thorough review of permissions prior to asking.