lsof /dev/dsp1 
lsof: WARNING: can't stat() fuse file system /home/jmcg/fuse/new
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse file system /home/jmcg/fuse/home
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse file system /home/jmcg/fuse/web
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse file system /home/jmcg/fuse/brainsware
      Output information may be incomplete.