@Field Marshal Von Krakenfart
>>"I don’t agree with that, this is exactly the same method politicians use to lie, hide the lie by wrapping it in a bit of the truth; you can never be sure that the original has been deleted, the only way around that is to never let a legitimately downloaded piece of music be resold,..."
I guess I phrased things badly.
It's the inability to delete the important part of the 'originality' of a track - the right/ability to resell it again - which is the main issue.
If the 'orginality' of any retained copies, wherever they may be, is not in some way deleteable by the resale, then it would be understandable why resale might be an issue for a rights holder.
From what I can see, ReDigi establish 'legitimacy for sale' by
a) looking at the individual MP3 file
b) recording the fact that I have sold a file via them
c) deleting any copies I have which their software can detect
but that does seem to be lacking, given they have no means to tell how many copies of the same file I may have already made and distributed.
>>"What Redigi have tried to do is create/access a new market, if Redigi have 1 copy of a song they say they will only sell 1 copy and if some smart ass tries to sell the same track again Redigi will reject it."
If a typical Amazon MP3 I bought was copied to another person's machine, how could it be identified as being the 'same' as my copy if the file contents are actually the same for all copies of that file that Amazon sell, which is, apparently, the case for most MP3s they actually sell?
*I* can only sell a given track once, but would that stop me giving copies to a dozen mates before selling mine, and have them all able to sell the track as well?
Or in the case of Amazon MP3s, does it mean that once one Amazon MP3 of a given track has been sold, no-one else can sell an Amazon MP3 of that track?
Or do ReDigi simply not deal in non-uniquely-fingerprinted MP3 files, meaning they're no use to someone who buys 'clean' MP3s?
None of those situations seem exactly perfect - one makes a mockery of the whole patented 'verification' idea in the first place, and the others would make the site rapidly worthless for many or most users.
Now, if they have found a way to trace the provenance of a specific copy of a 'clean MP3', which has been legitimately bought and downloaded by multiple people without any distinguishing information in the various downloaded copies, that *would* be interesting.
If somewhat unlikely.