http://blog.twitch.tv/2014/08/3136/

Please Note: Audio Recognition applies to VODs only.

Starting today, Twitch will be implementing technology intended to help broadcasters avoid the storage of videos containing unauthorized third-party audio. We respect the rights of copyright owners, and are voluntarily undertaking this effort to help protect both our broadcasters and copyright owners.


What Is Audio Recognition?

We’ve partnered with Audible Magic, which works closely with the recorded music industry, to scan past and future VODs for music owned or controlled by clients of Audible Magic. This includes in-game and ambient music. When music in the Audible Magic database is detected (“Flagged Content”), the affected portion of the VOD will be muted and volume controls for that VOD will be turned off. Additionally, past broadcasts and highlights with Flagged Content are exportable but will remain muted.

The Audible Magic technology will scan for third party music in 30 minute blocks — if Audible Magic does not detect its clients’ music, that portion of the VOD will not be muted. If third party audio is detected anywhere in the 30-minute scanned block, the entire 30 minutes will be muted.

How It Works: Scanning VODs Only

Audio Recognition will only be run against audio in VODs. We are not scanning live broadcasts and there is no automated takedown of live content.

Flagged Content will display an on-screen notification informing viewers that content owned or controlled by a third party has been identified. The progress bar will also be red for the duration of the muted section.

Audio_Recognition

Please note that Audio Recognition is not guaranteed to be 100% accurate. It may return false positives or miss content from copyright owners who do not work with Audible Magic. If you wish to include music in your VODs, please remember that you are responsible for clearing all such rights (this includes ambient music that may be playing in the background while you are broadcasting). If you would like to include free-to-use music in your VODs, there are a variety of resources available to you, including:

Creative Commons
Jamendo
SongFreedom
Broadcaster & Copyright Owner Appeals

If you believe that your video has been flagged improperly and that you have cleared the rights to all of the sound recordings in your uploaded video, then we will consider unmuting your video if you send us a counter-notification that is compliant with the provisions of the Digital Millennium Copyright Act (“DMCA”).

Any copyright owner that believes that any of their content is used in any live broadcasts or VOD without authorization should submit a notification of claimed infringement to Twitch pursuant to our Terms of Service.If you are the legal owner of copyrighted music that you would like to protect via Audible Magic’s technology, visit AudibleMagic.com.

Twitch has partnered with Audible Magic without waiving any rights or defenses available to it under law. Twitch is not obligated to filter content stored on the Twitch platform by its users and assumes no liability for the actions of its users notwithstanding the implementation of the Audible Magic technology. Twitch reserves the right to stop filtering audio content in VODs in its sole discretion at any time and without liability to any third party, subject only to any contractual obligations.

We want to hear your feedback and questions. Tune in to the following events to ask us (almost!) anything:

Reddit AMA on /r/Twitch: Thursday, August 7, 100am PST
Twitch Weekly: Friday, August 8 at 2pm PST
And, as always, please feel free to leave your comments below. We will answer as best we can.
So, Twitch is going to start cracking down of copyright infringement by flagging and removing VODs that include copyrighted material. It's a sad day for the joyous wonder that was happy fun background noise.

It probably won't be long until having Spotify up when you live stream leads to action against you/your account.