playing .wma file, but not showing in playlist.

[G-Force]

nreel, The most recent occurance of this was a little different than the first. The first time it happened, The song was playing but was not showing anywhere on the playlist. I couldn't do anything until the song was done. The second and third time this happened, the songs remained in the playlist but show as "played" while still playing and I could do nothing to stop the song.