-----------------------
 on_save ( /usr/share/exaile/xl/track.py @ 425):
-----------------------
Traceback (most recent call last):
  File "/usr/share/exaile/xl/track.py", line 450, in on_save
    media.write_tag(track)
  File "/usr/share/exaile/xl/media/__init__.py", line 75, in write_tag
    formats[ext].write_tag(tr)
  File "/usr/share/exaile/xl/media/mp3.py", line 61, in write_tag
    id3.save(tr.io_loc)
  File "/usr/lib/python2.5/site-packages/mutagen/id3.py", line 358, in save
    insert_bytes(f, outsize-insize, insize+10)
  File "/usr/lib/python2.5/site-packages/mutagen/_util.py", line 168, in insert_bytes
    fobj.truncate(filesize)
IOError: [Errno 95] Operation not supported