I've just installed Linux Mint the other day, and I love it !
But I try to play my music... and nothing comes out. I can hear the login sound, and I can also hear sound from Audacity, and when I press "Test" in sound preferences, I can hear the tone, but I can't hear anything from other applications. In Volume Control the output device says "Null Output". I have a HDA-Intel Conexant CX20549 sound card, and a Compaq Presario V6000 laptop.