WEM is a file format used by Wwise, and audio engine for computer games. What kind of data do WEM contain? WEM files contain encrypted audio data. Wave Works Interactive Sound Engine can be to modify game audio data stored in WEM in real time.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the WEM file after converting to WPROJ may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from WEM to WPROJ to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting WEM to WPROJ does not meet your expectations, you can simply try to find on the Internet a different version of your file in WEM format, properly converted to a WPROJ file by someone else. If this fails, use the information provided in the further part of the website.
Unfortunately, if after performing the two previously described steps (trying to find your WEM file converted by someone else, and the attempt to convert it to WPROJ on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the WEM file in its original format (without conversion to WPROJ file). Such a solution will be difficult to implement, but it certainly will give the best result.