Above fix worked for me too. According to a kind soul in #mpd Freenode it's because those lines force mpd to bypass dmix.
Those lines should probably be commented by default in Ubuntu. -- MPD Prevents Other Applications from Using Audio while not stopped https://bugs.launchpad.net/bugs/364475 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs