I have 2428 songs, but I also have all the Doctor Who seasons in my iTunes as well and the music that is in my iTunes is just the music that fits on my ipod. I really have 40gb of music on my computer I just need to get a bigger ipod.
I only have like five albums because I got a new computer, but my 8gb iPod is full all the way. If I put all the songs from it onto my computer, I would have a good sized library. Before, though, I had about 10 days worth of music.
7804 songs using 42.6GB and fast approaching 8000 thanks to last fm making it easy to find great new albums. I think I have listened to every song at leaat once though its safe to say some haven't been played in awhile.