It seems both ..dmse and .dmss files are from Roxio software and both used for projects. However it does not seem possible to convert one to another or somehow transfer the data. We haven't found any related information on internet that could help us with this topic, so if you know anything relevant, please let us know.
Convert Roxio Sound Editor project file to Roxio Creator VideoWave slideshow project file.
We found one software available in the database for this conversion.
Microsoft Windows software - convert dmse to dmss on Windows
Roxio Creator is set of tools used to burn CDs, DVDs and Blu-ray discs
Convert from dmse file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.