Okay, move this to the PhatHackMM beta forums section please

I think someone else has reported that the 'Save/Eject' option has been greyed out. Please tell me the steps you took to get the media transferred to the DMS so that I can take a look as to why this is. One short, quick way of forcing the issue would be to create a new playlist on the DMS and then delete it straight away. All of your changes on the DMS are saved, even if you close the application down and start it again, so just getting the option enabled, and using it will update your DMS correctly.
The reason Windows says the cartridge can't be ejected, is mostly likely because the application is still running and holding a lock on the database file.
If you've close the application, make sure no instances of Windows explorer are open because this too holds open the drives so that they can't be ejected.