Switching between micro SDHC disks a practical solution for large collections?

Regarding 32GB cards, my understanding is the Clip+ database can only hold about 8000 tracks.

So, assuming you’re loading mp3/ogg/wma files (rather than big FLAC files) there’s a good chance you wouldn’t be able to use the full 40GB capacity.

ie: assuming an average file size of 4MB, you could transfer roughly 10,000 of them, but the Clip/Fuze would only provide access to roughly 8,000.