There are other instructions on the web on how to install samples in GarageBand – what a mess. I have found a way to add instruments to GarageBand – but these instructions are purely informational – I wouldn’t advise you to mess around in these directories if you don’t know what you are doing. Also, they only work with our drum kits.
First you would need to have downloaded and unzipped the drumsets.
http://www.audiopropellor.com/room-boom-free-drum-kit/
http://www.audiopropellor.com/free-drum-samples-for-logic-garageband-and-ableton/
Then you need to get these .exs and .cst files.
You will need to put those files in two directories, where <Your Name> is your user account and <New Folder> is a new folder you create – not sure if it matters, but I’d probably use the same name for both folders, perhaps CustomSamples. I used AudioPropellor to jazz things up a bit.
Then you need to put the .exs files in:
/User/<Your Name>/Library/Application Support/GarageBand/Instrument Library/Sampler/Sampler Instruments/<New Folder>
Put the .cst files in:
/User/<yourname>/Library/Application Support/GarageBand/Track Settings/Software/<New Folder>
Voici:
Start up garageband and you should be able to create a sampler and then navigate to a <New Folder> folder in the right pane – the instruments will be in there. The only thing I’m not sure about is if GarageBand will find the audio files. If it’s not finding them wherever you have them (and if you haven’t put them in any other directories where you store samples), you could move them to the “Sampler/Sampler Files” directory.
So there you are – let me know how this went for you in the comments.
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I followed your instructions, but did not end up with a drum kit in garage band, rather some sort of sine wave sound. I think it’s because I don’t know where to put the RB5 folder. I tried it in the “Sampler Files” folder directly, and also as a sub-folder in there of one I called “AudioPropellor.” I’m going to try with the Sam’s Sonar samples now, but I’d appreciate any advice you can give. Thanks.
The sine wave means that it couldn’t find the audio files. From the article: ” The only thing I’m not sure about is if GarageBand will find the audio files. If it’s not finding them wherever you have them (and if you haven’t put them in any other directories where you store samples), you could move them to the “Sampler/Sampler Files” directory.”
Have you tried this yet?