undo vs delete ?

how do I delete the outakes that have been removed using undo?

Open the audio window, and under the "Edit" menu, choose "Select unused".

This will select and highlight any audio that does not appear on your arrange page. Then simply go to the "Audio File" menu, and select "Delete Files".

Be aware, there is no undo for this operation. It erases the audio that was selected from your hard drive. So be sure this is what you want to do.

But yes, this will eliminate and erase any "out-takes" in your song, that you no longer need.

tried it on a old song and it worked great, but also seemed to delete a few tracks that were in the arrange window.???

Well, that shouldn't have happened. Off the top of my head, I can't think of any reason why that would have occurred. Anyone else have any ideas?

What you could also do, is utilize the "Save As Project" function. If you did it initially at the start of the song, do it a second time. Then, in the options window, where it says "Unused Audio", select "Leave". That way, any unused audio will remain in the songs original Audio Files folder, while the new version will copy or move only the audio files actually used in the song.

You can then open up the newly saved song, confirm that all audio is present and accounted for, and then go delete the original song folder.

You really shouldn't have to do that, as the "Select Unused" and "Delete files" should work. But "Save As Project" is also an excellent way to archive a song.

How do I do this for Audio Intstrument tracks?

I don't believe there is a similar function for MIDI regions. mainly because of the nature of the content. Generally though, I tend to get rid of that type of thing while working on a track. If I think I don't need a MIDI region any longer, but am not 100% sure, I simply mute it, or move it to a "No Output" track. But once I am sure, I simply delete it.

what i tend to do to reduce the size of a project that is finished, is select unused, press delete on the keyboard, select all (apple - A) Optimize (CTRL - O) go back to arrange windows and select file - clean up (from same menu as consolidate.) this should give you only the files that you need. as for the midi stuff it don't use any disk space so don't worry, if it gets in the wy select it and press delete.