We have found 2 software records in our database eligible for .ses to .sesx file format conversion.
Both .ses and .sesx files are audio sessions from Adobe Audition, with the difference that SESX format is XML based and used in modern version of the software. Unfortunately, latest AA does not allow import of old .ses files, leaving users with no way how to convert ses to sesx natively.
You can find a tool called ses2sesx on Adobe Exchange, which is probably the only tool that can help you with this right now.
Updated: March 16, 2023
SES
Files with ses extension usually contain metadata about audio session edits, saved using Adobe Audition an audio editing software.
SESX
Files with sesx file extension are audio sessions saved in Adobe Audition. These files are basically audio projects used to edit audio data. When the project is finished, the appropriate audio resources are saved in one of the common audio formats, like MP3.