XML File idea

["Alistair Frith" <alistairfrith@xxxxxxxxxxx>]

I doubt this information is available, however...

I have a little homemade system that downloads radio schedules and parses 
them for programs I might be interested in. It then creates a schedule to 
automatically record such programs. However, it can't tell whether the 
program is a repeat of one I've already recorded. It occurs to me that the 
best way to tell would be if the XML had a unique Program Id field (eg 
'first broadcast on'). the I could avoid recording Saturday's News Quiz if I 
had already recorded Fridays.

I thought searching on the description might do but it often says 'repeated 
at ...' or 'repeat of ...' so two broadcasts of the same show have different 
descriptions. Also, the News Quiz often has descriptions like "topical quiz 
show" to describe different episodes.

Are unique IDs available for broadcasts?

Regards,

--- Alistair.