After downloading the free Garageband update with Maverick when opening an existing song it now ask if I want to save it with a number next to the title. When I do there is a duplicate song that I have to trash.
That is a necessary precaution.
After a song has been opened in GarageBand 10.0, you are no longer able to open it in GarageBand '11, because GarageBand 10.0 uses a new format. That is, why the new version does not overwrite your old GarageBand '11 files without asking. I would not delete the old versions, until you are very sure, that the GarageBand 10.0 version really has all the sound effects and instruments that you originally used in GarageBand '11 for the song. GarageBand 10 does not (yet) support all GB '11 features, and you may need to open the song in GarageBand '11 to use efefcts, that are only abailable in GB '11.
I have kept my GB '11 installation and keep all original versions of my projects for exactly that reason.
So when I duplicate the song, I should compare the 2. If they are the same just delete the orginal?
Do you have kept GarageBand 6.0.5 installed? Then you can compare directly. Both applications can be open at the same time.
And if you find, that all instruments and sound effects are working well in the new version, you can delete it, yes. Only be aware, it will not be possible to add any GarageBand '11 effects as easily as before, or export your project as a Podcast, if you delete the GB '11 version. You will have to start over again.
And if you do not have GarageBand '11 any longer, or know, that you will not need the GB'11 version and have it on you backup drive anyway, you can directly save the the new version over the old version.
Just delete the added "1" in the filename in the File chooser dialog, when you save the project. YOuw ill see a warning, but can ignore it and press the "Replace" button - if you know what you are doing!
First of all, thank you so much for your help and response. Composing and recording mean a lot to me. I had Garageband 09 then downloaded Maverick then downloaded garageband on their free upgrade...the one with drummer. Before I do anyhting else, I wanted to communicate that to you first. My computer says that I have 10.1.1
You are welcome, Rosewood6.
When you downloaded the free GarageBand 10.1.1, the installer may have moved your GarageBand 09 to a separate folder in your Applications folder. Check, if you still have your older GarageBand in a subfolder. If yes, keep it, until you are confident, that GarageBand 10.0 is all you need.
I have never tried, if GarageBand '09 will run on Mavericks, however, since I upgraded to GarageBand '11 long ago.
P.S.: Have you already checked, if you can download the in-app purchase for free? I don't know, if that will be possible for you, since you did not upgrade from GB '11, see:
Try the "Restore Purchase" link in the "GarageBand" application menu.