How can I make sure my Dropbox files don't take up space from my devices?

I see that it's cancelled (see below).

Perfect, thanks for checking, Steven!

Now that we've confirmed that the trial has been cancelled, let us know if there's anything else we can help you with.

I've been away for a few day so have been unable to continue with my original question.

I established that FileBrowser - through the help of the developers - does not work playing my MP3s stored on Dropbox.

I've tried OutPlayer too (as this seemed to have been one recommended online by various sites).  That doesn't work either as I can see none of my songs listed on their app.

Can I ask, therefore, what is potentially the best MP3 player that I can try out (free to begin with as I don't want to be wasting my money), for use with Dropbox?  All of my songs / tunes are stored as MP3 files.

Thanks in advance.

* PS I have just tried to play an MP3 file from with Dropbox itself.  They won't play.  This is the error notice that I get:

Hey stevecjames!

Do you get the same error when trying to open your .mp3 files using your browser? 

If you download the file locally on the device, does it preview? 

Hello.  Thank you for your reply.

a) I can download tracks from Dropbox and then play them back from my laptop (I don't know what you mean by "preview")

b) I can play tracks from within a browser directly from Dropbox (please see attached image below)

c) Nothing plays when I use a third-party iOS application.

Would you mind clarifying your mobile's OS, and the Dropbox version you're using there stevecjames?

Do you get the same error for all of your .mp3 files? 

Yes, of course.  It is : iOS 18 (the new one) on an iPhone 14.

Yes... it's the same error for every mp3 file.

The Dropbox iOS version I am using on the iPhone is the latest one.  It was updated yesterday :

Hm, odd stevecjames.

The .mp3 files should preview when you use the iOS mobile app. 

Could you try clearing the app's cache through its settings, and let me know if you notice the same behavior? 

I shall do that if you can tell me how to do clear them ( forgive me if there is now a delay of several hours as I really do have to go to bed. Goodnight ) :

Hey stevecjames - to clear your cache, you can follow these steps:

On iOS:

1. Open the Dropbox iOS app.
2. Tap the account icon (person) in the bottom right.
3. Tap the gear icon in the top right.
4. Scroll down and tap Clear cache.
5. Tap Clear cache again.

Once you’ve cleared the cache, log out of the Dropbox app, restart your device, then log back in.