Nine Inch Nails have pioneered the idea of giving away multitracks or song masters away to the general public for remix purposes. All multitracks are available for download from the fan-made site ninremixes.com, here. Alternatively, a selection of multitracks can be downloaded from the official NIN remix site, remix.nin.com, here.
The Fragile era
In 1999, nin.com had multitrack clips up of three songs in swf format. None of the songs from this era were released with complete multitracks.
"Starfuckers, Inc." was released as 21 separate 13-second files.
"The Day The World Went Away" was released as 17 separate 14-second files.
"The Big Come Down" was released as 15 separate files of varying lengths.
With Teeth Era
"The Hand That Feeds" was the first multitracks of two songs to be released for this album, released via nin.com on April 15th, 2005 in Garageband format (with RAW AIFFs).
"Only" was released on June 25th, 2005 in more formats than the previous multitrack.
Year Zero era
"Survivalism was the first of this album to be released on March 13th, 2007. The next batch of multitracks to be released were "God Given", "Me, I'm Not", "Capital G", "My Violent Heart" and "The Beginning of the End". The multitracks for every song on Year Zero were then made available with the physical release of Year Zero Remixed; to coincide with the release, remix.nin.com was set up where users can upload, stream and download mixes, as well as download multitracks in .zip files.
Ghosts I–IV era
The multitracks for all the songs on Ghosts I–IV are included on a DVD-ROM as a part of the deluxe and ultra-deluxe editions of the album which can be ordered from ghosts.nin.com, although the latter has sold out. Additionally, multitracks for the songs "10 Ghosts II", "19 Ghosts III", "26 Ghosts III","34 Ghosts IV" and "35 Ghosts IV" can be downloaded from remix.nin.com
The Slip era
The multitracks for the single "Discipline" were made available on remix.nin.com at the same time it was released as a free download.
Multitracks for the remaining songs on the album were made available on May 5, 2008 as a free download from remix.nin.com
Other
In addition, the Pigface version of "Suck" was released as multitracks for a remix competition.
Following the release of The Inevitable Rise And Liberation of NiggyTardust!, the multitracks for "Banged And Blown Through" and "Break" were made available for download from remix.nin.com
Together with the NINJA 2009 Summer Tour EP which was released for free download in 2009 three new multitrack packages appeared on remix.nin.com, including Jane's Addiction's Chip Away and Whores and Street Sweeper's Fight! Smash! Win! (although this track is not featured on the EP).