To quote from SubJunk on the PlayStation 3 Media Server v1.50.1 Build 61 changes:
This build functions as the bleeding-edge testing version of PMS. Here you can find features and bugfixes before they are added to the official version, and sometimes ones that never will be. Using this build is mostly a way for you to see the newest developments and to help us by providing feedback.
Changelog 1.50.1 Build 61:
Switched from using Git source back to SVN
Synchronised with official r1024 from r1014
Updated MediaInfo for Windows and OS X to 0.7.53 from 0.7.52
Updated MPlayer and MEncoder for OSX to SB22, in sync with the Windows version.
Updated MPlayer and MEncoder to SB22 (Changelog: MPlayer & MEncoder SB22 released Spirton)
Updated MPlayer and MEncoder for OSX to SB21, in sync with the Windows version.
Updated MPlayer and MEncoder to SB21 (Changelog: MPlayer & MEncoder SB21 released Spirton)
Updated MPlayer and MEncoder for OSX to SB20 (Changelog: MPlayer & MEncoder SB20 released Spirton)
Updated FFmpeg for OSX to 0.9.1
Updated FFmpeg to r35509 from r31564
Try to fix tsMuxeR with newer FFmpeg versions based on FFmpeg #898 comment (ffmpeg.org/trac/ffmpeg/ticket/898)
Updated to latest versions of libraries (codec, jdom, logback and slf4j)
Shagrath for the main project.
Chocolateboy, lokkju, jscott, ExSport and idavies, in no particular order, for code contributions.
DPT, jpagie, mads and mazey for private testing.
Tianuchka for help with translations.
The dozens of users who provide feedback in order to let me know what needs to be improved.
Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene updates and homebrew releases!
There was (sort of) but it was removed to prevent them getting their butts sued!
If you get the source code from the repository at a certain revision you might find it - but you'll then need to build it too
(I'm sure there are comments on the their forum about this which might give a clue as to the revision date)
Personally - i've NEVER had a problem with Cinavia - all my videos play perfectly.
Fix program starting on Linux
Support videos with resolutions that are not divisible by 4
Fixed the display of Hebrew subtitles
Improvements to logging
Updated Czech language (thanks, valib!)
For 1.23.0 and above:
Just uninstall the older version and install newer one
For versions prior to 1.23.0:
To retain your old settings you may have to copy your old config file/s to a new directory.
To find out where the new directory is on your computer, run the program and go to the Traces tab and look on the 14th line, the line that says "Profile directory:", that is the folder your config files should be saved now.
If you use the "media library / cache" option you should reset it.