Thankyou all for your help- I have now used iTunes and it is exactly what I needed and produced a result straight away.
Whilst we are on the subject (although we're not, really...); As iTunes is the convenience tool of the data-compression generation, does it compress on import?
i.e. If I import commercial audio material from a CD into my machine, when I play it back from iTunes, is it already then reduced to an MP3??
Thanks
JimP