Repository: youtube-dl
Issue: Site support request: audius.co
Labels: site-support-request

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## Checklist

<!--
Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2020.03.01. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
- Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
- Make sure that site you are requesting is not dedicated to copyright infringement, see https://yt-dl.org/copyright-infringement. youtube-dl does not support such sites. In order for site support request to be accepted all provided example URLs should not violate any copyrights.
- Search the bugtracker for similar site support requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
- Finally, put x into all relevant boxes (like this [x])
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- [x] I'm reporting a new site support request
- [x] I've verified that I'm running youtube-dl version **2020.03.01**
- [x] I've checked that all provided URLs are alive and playable in a browser
- [x] I've checked that none of provided URLs violate any copyrights
- [x] I've searched the bugtracker for similar site support requests including closed ones


## Example URLs

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Provide all kinds of example URLs support for which should be included. Replace following example URLs by yours.
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- Single track: https://audius.co/laxcitymusic/delete-3337
- Artist page: https://audius.co/laxcitymusic
- Charts: https://audius.co/trending


## Description

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Audius is a music streaming site. 
https://audius.co
Tried the latest version but I only got unsupported url error.

Verbose log: 
```
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--ignore-config', '-v', 'https://audius.co/laxcitymusic/delete-3337']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2020.03.01
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: ffmpeg 4.2.2, ffprobe 4.2.2
[debug] Proxy map: {}
[generic] delete-3337: Requesting header
WARNING: Falling back on generic information extractor.
[generic] delete-3337: Downloading webpage
[generic] delete-3337: Extracting information
ERROR: Unsupported URL: https://audius.co/laxcitymusic/delete-3337
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpavop71lg\build\youtube_dl\YoutubeDL.py", line 797, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpavop71lg\build\youtube_dl\extractor\common.py", line 530, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpavop71lg\build\youtube_dl\extractor\generic.py", line 3351, in _real_extract
youtube_dl.utils.UnsupportedError: Unsupported URL: https://audius.co/laxcitymusic/delete-3337
```