Consolidating multiple itunes libraries and then upload to itunes match

Question

I have over the years my taste in music evolved and I attempted to organize my music library using iTunes, on multiple PCs. I would remove music that no longer suited me from the library and leave only the music that I was actively interested in. Also, both my wife and I have different ITunes Libraries on our respective computers, and indoubtably have the same songs in our libraries. Now that Apple is offering the ITunes Match feature, I would like to consolidate my current ITunes library as well as music from my older PCs. I know for a fact that combining all my music from their various sources will create an extreme amount of duplicates, but will also provide me with music that I used to enjoy. I have spoken with the folks as the local Apple store and have honestly not received a response that makes me comfortable with using ITunes Match. So I will pose my questions here, and hopefully somebody can enlighten me. ;-)
Will ITunes Match remove duplicate songs from my library if they are not named the same exact thing?
Can I simply create a new ITunes library and import all the music from my various PCs, which will create duplicates and let ITunes Match remove the duplicates?
Both my wife and I have differenrt Apple Ids that we use for our iDevices. If I were to create a single library and upload it to Itunes Match, would we both need to use the same Apple Id going forward?
Many of the songs that I have are remixes, how would ITunes Match handle these?
Thank You in advance!!!!
Bobby

Answer 1

Your questions:
Will ITunes Match remove duplicate songs from my library if they are not named the same exact thing? 
Can I simply create a new ITunes library and import all the music from my various PCs, which will create duplicates and let ITunes Match remove the duplicates? 
Both my wife and I have differenrt Apple Ids that we use for our iDevices. If I were to create a single library and upload it to Itunes Match, would we both need to use the same Apple Id going forward? 
Many of the songs that I have are remixes, how would ITunes Match handle these?
Summary answer:
iTunes Match does not remove duplicates.  It does not use the data about a Song such as Name to discriminate.  The match process uses sampled sound, so re-mixes and new releases are recognised as discrete.  The match process is not 100% accurate, so there will be a number of mismatches.  This demands effective secure backup of Song files outside iTunes Match as the route to safeguarding your music.
Perhaps the best advice would be to create a music account with an iTunes library where you import all Songs to date.  Typically use of 3rd party tools to tidy this new main library will be a very effective route to provide iTunes Match with the best start point you can.  Use of a single Apple Id to access this from the cloud will be needed.  Beware that Apple has strict rules on association of Apple Ids with devices.  Once a device or computer is associated with your Apple ID, you cannot associate that device or computer with another Apple ID for 90 days, see http://support.apple.com/kb/HT4627.