Spanners,
Thanks. I have updated him to v2.60 and also set up his iTunes to import using the MP3 encoder - tunes imported this way can be successfuly transferred to the PSP. What was confusing me was that the PSP manual (and the website) says that MPEG-4 is a valid music format
Anyway, seems to work now, although we will need to work out how to convert the music already in his iTunes in the MPEG-4 format.
Aiglon