The world's best replacement for Jammit on Mac, Windows, and iOS.

Download and play any Jammit file for free. Export AIFF, WAV, MP3 and PDF scores.

Catalina and Big Sur

Just a note for Crammit users running Mac Catalina or Big Sur.

Make sure that you grant Crammit FULL DISK ACCESS in your System Preferences - > Privacy and Security pane. IF its not enabled, you will get a permissions error when the downloader tries to save a file on your machine!

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Site update!

A couple of minor tweaks to the website… Download access only is longer being offered as a separate purchase. Those who have purchased it already, still have valid accounts, but I'm finding it too much overhead to be constantly refunding accidental purchases from people who have bout a version of Crammit!

That purchase item is a holdover from the early days of Crammit where it was only an exporter, and not a player. Now that all versions can download directly from within the app and then unpack and play (not to mention export!), it seems silly to maintain this legacy purchase item.

I call it progress!

Happy New Year

2020 finds us in a pretty good place. Stable versions of all formats now! Windows, Mac, iPhone, and iPad. Now I'm looking forward to the last link in the Jammit Chain… Recording! My new year's resolution is to add Recording to Crammit. You heard it here first.


I will be away for a well-deserved break (I think!) from August 20 to October 12, 2018. During this time, I will not have a computer so making any changes to ht database of registered users will not be possible until I return. The good news is that purchases from the App store iOS are unaffected, and the purchase of Crammit for Mac from this website will be unaffected. The only impact to loyal users is that separate download Access via the website will not be enabled until I return.

Really want to thank all the users for their support and enthusiasm for this project. It's been a helluva year, and George needs a beer and some sun!

Mac Version Audio Engine Update

Finally got the new Core Audio based audio engine dropped into the Mac version for Crammit 1.3.0b6. There is a startling difference. The audio seems clearer to me, and the looping is much, much tighter. So now the same audio engine (with a couple of tweaks for the two platforms is running in the iOS and Mac OS version! Gone are the special audio-only Quicktime movies to playback multitrack audio. Now the pure AIFF linear PCM streams that Crammit decompresses are used for playback on all platforms. Woot!