>I assume scp is a secure form of ftp.

You are correct. Secure CoPy. It is a service of the ssh daemon that also allows ssh (Secure SHell).

>I'm not sure why that would be necessary over a
>firewalled home lan, however.

It's not, except I run wireless (WEP enabled), and it pays to be extra careful with a linux box. If someone gets into your machine, they can do anything.

>As far as the numbered MP3's, is there a database
>somewhere with the cross references ?

I would imagine so, I would also imagine that the information is stored in the id tags. I haven't figured the scheme out, but it might be the same scheme as is used on the empeg car player. Alternately, there are people on the BBS who could probably give a good push in the right direction if asked.

I haven't had a reason (or time) to tackle that issue yet. If you are interested in working on it, I could help you setup a build environment, etc.