Easterbrook, Circuit Judge.

Last June the Supreme Court held in MGM Studios, Inc. v. Grokster, Ltd. ... (2005), that a distributed file-sharing system is engaged in contributory copyright infringe- ment when its principal object is the dissemination of copyrighted material. The foundation of this holding is a belief that people who post or download music files are primary infringers....

In this appeal Cecilia Gonzalez, who downloaded copyrighted music through the Kazaa file-sharing network, ... contends that her activities were fair use rather than infringement. The district court disagreed and granted summary judgment for the copyright proprietors (to which we refer collectively as BMG Music).... The court enjoined Gonzalez from further infringement and awarded $22,500 in damages....

A "fair use" of copyrighted material is not infringement. Gonzalez insists that she was engaged in fair use ... or at least that a material dispute entitles her to a trial. It is undisputed, however, that she downloaded more than 1,370 copyrighted songs dur- ing a few weeks and kept them on her computer until

she was caught. Her position is that she was just sampling music to determine what she liked enough to buy at retail. Because this suit was resolved on sum- mary judgment, we must assume that Gonzalez is tell- ing the truth when she says that she owned compact discs containing some of the songs before she down- loaded them and that she purchased others later. She concedes, however, that she has never owned legiti- mate copies of 30 songs that she downloaded. (How many of the remainder she owned is disputed.)

Instead of erasing songs that she decided not to buy, she retained them. It is these 30 songs about which there is no dispute concerning ownership that formed the basis of the damages award.... The files that Gonzalez obtained ... were posted in violation of copyright law; there was no license covering a single transmission or hearingand, to repeat, Gonzalez kept the copies....

[Title 17 U.S Code] Section 107 provides that when considering a defense of fair use the court must take into account "(1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes; (2) the nature of the copyrighted work; (3) the amount and substan- tiality of the portion used in relation to the copy- righted work as a whole; and (4) the effect of the

use upon the potential market for or value of the copyrighted work."

Gonzalez was not engaged in a nonprofit use; she downloaded (and kept) whole copyrighted songs (for which, as with poetry, copying of more than a couplet or two is deemed excessive); and she did this despite the fact that these works often are sold per song as well as per album. This leads her to concen- trate on the fourth consideration: "the effect of the use upon the potential market for or value of the copyrighted work."

As she tells the tale, downloading on a try- before-you-buy basis is good advertising for copyright proprietors, expanding the value of their inventory. The Supreme Court thought otherwise in Grokster, with considerable empirical support. As file sharing has increased over the last four years, the sales of recorded music have dropped by approximately 30%. Perhaps other economic factors contributed, but the events likely are related. Music downloaded for free from the Internet is a close substitute for purchased music; many people are bound to keep the downloaded files without buying originals. That is exactly what Gonzalez did for at least 30 songs. It is no surprise, therefore, that the only appellate decision on point has held that downloading copyrighted songs

cannot be defended as fair use, whether or not the recipient plans to buy songs she likes well enough to spring for....

Although BMG Music sought damages for only the 30 songs that Gonzalez concedes she has never purchased, all 1,000+ of her downloads violated the statute. All created copies of an entire work. All un- dermined the means by which authors seek to profit. Gonzalez proceeds as if the authors' only interest were in selling compact discs containing collections of works. Not so; there is also a market in ways to introduce potential consumers to music.

Think of radio. Authors and publishers collect royalties on the broadcast of recorded music, even though these broadcasts may boost sales.... Downloads from peer-to-peer networks such as Kazaa compete with licensed broadcasts and hence undermine the income available to authors. This is true even if a particular person never buys recorded media.... Many radio stations stream their content over the Internet, paying a fee for the right to do so. Gonzalez could have listened to this streaming music to sample songs for purchase; had she done so, the authors would have received royalties from the broadcasters (and reduced

the risk that files saved to disk would diminish the urge to pay for the music in the end).

Licensed Internet sellers, such as the iTunes

Music Store, offer samplesbut again they pay authors a fee for the right to do so, and the teasers are just a portion of the original. Other intermediaries (not only Yahoo! Music Unlimited and Real Rhapsody but also the revived Napster, with a new business model) offer licensed access to large collections of music; customers may rent the whole library by the month or year, sample them all, and purchase any songs they want to keep. New technologies, such as SNOCAP, enable authorized trials over peer-to-peer systems....

Authorized previews share the feature of evanescence: if a listener decides not to buy (or stops paying the rental fee), no copy remains behind. With all of these means available to consumers who want to choose where to spend their money, downloading full copies of copyrighted material with- out compensation to authors cannot be deemed "fair use." Copyright law lets authors make their own decisions about how best to promote their works; copiers such as Gonzalez cannot ask courts (and juries) to second-guess the market and call wholesale copying "fair use" if they think that authors err in understand- ing their own economic interests or that Congress erred in granting authors the rights in the copyright statute. Nor can she defend by observing that other persons were greater offenders; Gonzalez's theme that she obtained "only 30" (or "only 1,300") copyrighted songs is no more relevant than a thief's contention that he shoplifted "only 30" compact discs, planning to listen to them at home and pay later for any he liked.

BMG Music elected to seek statutory damages under 17 U.S.C. 504(c)(1) instead of proving actual injury. This section provides that the author's entitle- ment, per infringed work, is "a sum of not less than $750 or more than $30,000 as the court considers just." But if an "infringer sustains the burden of proving, and the court finds, that such infringer was not aware and had no reason to believe that his or her acts constituted an infringement of copyright, the court in its discretion may reduce the award of statutory damages to a sum of not less than $200."... Gonzalez asked the district court to reduce the award under this proviso, but the judge concluded that 402(d) bars any reduction in the minimum award. This subsection provides: "If a notice of copyright in the form and position specified by this section ap- pears on the published phonorecord or phonorecords to which a defendant in a copyright infringement suit had access, then no weight shall be given to such a defendant's interposition of a defense based on innocent infringement in mitigation of actual or statutory damages." It is undisputed that BMG Music gave copyright notice as required"on the surface of the phonorecord, or on the phonorecord label or container."... It is likewise undisputed that Gonzalez had "access" to records and compact disks bearing the proper notice. She downloaded data rather than discs, and the data lacked copyright notices, but

the statutory question is whether "access" to legiti- mate works was available rather than whether infringers earlier in the chain attached copyright notices to the pirated works. Gonzalez readily could

have learned, had she inquired, that the music was under copyright.

As for the injunction: Gonzalez contends that this should be vacated because she has learned her lesson, has dropped her broadband access to the Internet, and is unlikely to download copyrighted material a gain.

A private party's discontinuation of unlawful conduct does not make the dispute moot, however. An injunc- tion remains appropriate to ensure that the miscon- duct does not recur as soon as the case ends.... The district court did not abuse its discretion in awarding prospective relief.

Affirmed.

Case Questions

1. What was the basis for Gonzalez's appeal?

2. How did the U.S. Court of Appeals for the Seventh Circuit respond to Gonzalez's claim