I just got a Sony MP3(network walkman NW-MS70D) as a late Xmas present.

So far I like it and it's wonderful. I thought it was suppose to be able to store so many "songs". Well, I've only checked out two CDs onto the MP3 player, now when I try to store more CDs on the player a notice comes up saying that there is no more memory space on the "device".

Is this normal? I've been using the optimum quality setting on the MP3 when checking out CDs. Someone told me that because the CDs I've put on the MP3 are classical ones I'll be able to record store a lot less for some reason.

The manual says I should be able to store about 11 hours of CDs, but I've only stored 2.5 hours and it says there's no more memory space on the device. What's wrong?