Okay. Long story short:
All music kept on external harddrive, dropped harddrive, lost everything, got most data recovered, half the music plays fine, half of it doesn't.
In Windows Media Player, the error message I get when I try to play some of the files: Windows Media Player encountered a problem while playing the file
In iTunes, the file just doesn't appear in the library. I presume these files are corrupt or something?
When I right-click each of the files that don't play and go to properties, the 'tpye of file' is 'MPEG Layer 3 Audio (.mp3)'.
However, I have gotten the error message that they are in 'unknown file format'
(I can't remember where I got that message).
But I don't understand how they can be 'unknown' when each file claims to be an mp3 file. Question:
Is there anything at all I can do to get the music back to normal, and get it playing?
Anything at all?