How do you create a music only smart playlist. seems impossible

Create Smart Playlist

Match All the following rules :
Kind contains AAC audio
Kind contains MPEG audio
Kind contains AIFF
(and so on for each music format you have)

Alternatively, you can use

Kind -> Does not contain -> video
Kind -> Does not contain -> movie

It worked fine the last time I used it (I do test things on my own system before I suggest), and "kind contains video" works correctly. This must be a bug in the current version of iTunes.

And please don't get snippy with people who are trying to help you. No one here owes you one second of their time. If a suggestion doesn't work, just say so politely so the person offering the suggestion can investigate further and/or offer other suggestions. Getting snippy is no way to get people to volunteer other ideas.

I should have said Match Any - my mistake

Try this

Match Any :
Kind contains AAC audio
Kind contains MPEG audio
{or whatever formats you use}
Limit to 100 by selected by most recently added

You will I'm sure be gratified to know that this works on my own computer.

This is mine: http://watr.co.uk/media/AudioOnly.png (Match all: Kind contains Audio, Podcast is false.)

William, select Limit to (100) Items sorted by Most Recently Added.

Hope this helps.