I mostly work with audio files when I record in Cubase. However, I have discovered that even when I discarded or undo a recording, the wav file remains and takes up space on the computer. Since I’m afraid of deleting the wrong files when I go into Finder, they are taking up space on the h-disk. Is there an easy way to delete files that are not used in a project and how do I know which files are not used?
Another question: Has anyone had problems with Cubase 13 after updating to macOS Seguoia v15.0.1?
In the pool window/audio menu remove unused media - Choose move to trash. Then empty the trash and you get the option to delete from disc.
Be careful…if audio is not used in this project but is in another it will still be deleted so you can’t do this is you dragged in samples from all over the place and didn’t use the option to copy them to project folder. In that case you’ll need to resave with copy all files to project folder first then it will only delete the copies.
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It sounds complicated but I’ll give it a try…
I bet Reaper can do it!
On a serious note, with the uncountable ways of doing things, Cubase isn’t going to have clue what to delete without you telling it. Easier just to open the Explorer and manually delete them.
And here is the BIG question:
WHY did Steinberg remove the brilliant Clean Up function? It’s a mystery to me, never answered.
I’ll keep a version of Cubase 9 installed just for this feature alone… And yes, it still works across all Cubase versions that uses the same project file format . cpr
That scanned through audio files in selected folders (and/or complete drives) and checked if they were referenced/used in ANY .cpr… in one go
The big problem with removing to Trash and then Remove from Disk is that you have to open all cubase projects one at a time (even within the same project folder).
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Cubase can easily know what files are or aren’t used in a project…most users staring into a typical audio folder of a multitrack project with multiple takes would have no idea whatsoever which are the takes they actually ended up using in the project.
I’m thinking of shared files, maybe even shared with other software.
Sure…but if you put the only copy of an audio file you also use in another program into a Cubase project audio folder I think you pretty much deserve to lose it 
I agree, but some users are not as organised as you and I. Some are downright sloppy.
Ok, I have read your posts and found that it is more difficult than I feared. But I’m going to go the long way and start with Audiopool as “Bister” suggests. Then I open my project and test so that everything works before I empty the trash. A long and cumbersome road but feels a little safer. Luckily, I always create a new folder for each project I start. I will get back to you if this solves my problem
I’m sorry but there was something wrong in the translation via Google. I mean Grim not “Bister” 
This is definitely one to proceed with caution on - personally I find using Windows Explorer is more satisfactory than the CB ‘Removed Unused’ as it puts the deleted files into the recycle bin so can easily be restored … the CB ‘Empty Trash’ wipes the files completely!
Ok, then I have to be even more careful. I take a backup and save everything to my removable h-disc before I start deleting files. Then I have both braces and a belt…