A new version of open source Linux-based media center MythTV was released this weekend. It's been half a year since the last major MythTV release, which means there are a ton of bug fixes and new features in MythTV 0.21.

The latest version includes support for ClearQAM recordings using the HDHomeRun. That means if you have the proper hardware you can record unencrypted HDTV streams from your cable company. MythTV 0.21 also includes several new official plugins including MythMovies, which displays movie showtimes based on your zipcode, and MythZoneMinder for monitoring security cameras.

Here are a few more highlights:

• MythFrontEnd memory consumption reduced by up to 75%
• Automatic discovery of MythTV servers and frontends
• Enables multiple recordings with one DVB or ATSC card if the channels are in the same multiplex
• You can now choose to record main audio, a secondary audio channel, or both

[via Missing Remote]