I played with Alsamixer and now I'm having issues with sound

view story

http://www.linuxquestions.org – I recently played with Alsamixer in the past day or so, and now I have problems with sound. I'm not sure if this is a kernel issue or if it is simply me having messed with alsamixer under a user account, which then tampered with audio configurations from then on. I'm not sure how to describe the issue. Sound from music and other audio files are really scratchy. I played with alsamixer while playing music, and eventually the issue sorted out after playing with enough controls. However, after a system reboot, the problem persists. I'm not sure if this is isolated to a single account, however. (HowTos)