I've been searching around on the internet and I can't seem to find anything on putting a larger hard drive in an mp3 player. As of right now, I have about 50GB of music, which means a ton of cds, even when burned in mp3 format. What I want to do it get an mp3 player and hook it up to my pioneer deck with the RCA inputs.

The biggest one I can find is the 60Gb ipod, there are a few others out there that are larger but I want to stay away from them since I've never heard of them before. I can't find anything on how to upgrade the hard drive. Do they just use a laptop (2.5") hard drive? What file system do I format it into or is there a special system like xbox's have that is different from FAT32 or NTFS?

I want to use this mp3 player

So basically what hard drives work and how do I format the new hard drive are my main questions