No file size from iTMS

So I was browsing through new podcasts to download this morning and I wanted to see what the file size of a particular hour-long cast weighed in at. For those who might not know: in your iTunes library, playlists or in the store, you can hit cmd + j (or Edit > View Options) to see this little window I have pictured. Now maybe this is old news, but to my surprise: you can't see file sizes in the iTMS. Neither on music nor podcasts.

Since broadband is being adopted faster than ever I would imagine most people wouldn't be too worried about this. Personally, I'm on a 6 MB Mb Comcast connection, but in the case of an hour long podcast I was merely curious about how much space it would take up on my nano (which I LOVE, btw. Review pending). since I haven't heard of any recording or bit rate standards for podcasts in the store.

Anyway, just another interesting (I hope) tidbit I stumbled on. If y'all have any info or insight regarding any of this stuff, please feel free to enlighten the rest of the class in the comments.

[thanks for the edit janeiro]