Fellas, is Mark correct? Do you anticipate having to be more guarded about stuff like this in the v3 timeframe due to similarity to other products?

The running order can be used to work out which songs you've listened to and which you haven't. Legally, that information is the copyright property of the record company.

No, actually I'm kidding. There are some specific things we feel nervous about helping people reverse-engineer, and I'm not going to be drawn on what they are, but hitherto this certainly hasn't been one of them.

Peter