@Matt
Thanks a lot
@6233638
Basically, I use a this for all my audio and different (non-music) things need different layouts and locations
eg
audiobooks can have authors, series, sub-series, book order
podcasts have yet a different layout
etc, etc
Even the filenames are different when you have to name a book track in relation to other books around it eg [series#][subseries#][book#][title][track#]
It's very confusing on a mobile device to just have a list of track names when you finish one book and want to pick the next in order - even more so when you don't actually know what the next name is, just that you finished book 3 and want book 4
So....... you could have a different preset for each type of audio - but that means that for each rename operation you could only do 1 type and have to remember to change the preset each time
..or you can use a calculated field that builds that path for you - now you can rename all the types at once and don't have to change keep changing the preset
(same for filename) - job's sorted and you never have to mess about again