it was a big one (can't remember how many gig) but it wasn't re-formatted. does this need to be done then?
I would mate, your camera may have formatted it slightly differently for use in that. Or if windows formatted it, then maybe what you already have on the card is causing confusion when being read in the 510.
I'd format it clean and shuv some mp3's on, I bet it will work fine then.
and i do this via my laptop then? cheers ears.
Well if its a standard SD mate, it may not work if its higher than 2gig in size after what Alan has said.
Just to try anyway, yeah format it in your laptop, I assume your laptop has memory card reader slots in it ? If not, you have a usb memory card reader you can plug up to it ? I hope so, else your goosed.
To format, just right click on the drive letter windows assigns to it then format it. Just do a quick format.