I look forward to the day when posting a photo of Times Square that contains a Coke advertisement (or any other copyrighted image) will result in an automatic DMCA takedown notice.
Additionally, if the software really *does* recognize any subset of protected material in an audio stream regardless of edits (which would be a fantastic feat of engineering given that this is quite difficult for trained humans), I can't wait for it to single out every rap album ever created for eggregious infringement of biblical proportions.
Please note that this isn't a dig on rap (except rap produced by Timbaland, who's well known for ripping entire songs from indie musicians and taking full personal credit, because he can): I create music using samples myself, and despite the fact that the samples I use are heavily obfuscated and melted into the mix such that they're basically reconstituted, I still run a risk just posting my work for free. And I'll face even more of a threat with software like this.
Rap artists, however, being commercially successful, are just a more likely, more juicy and ironic target for automatic copyright infringement detection - when you build an automated closet looker, better do a skeleton check in your own house first!