Okay cool thanks for the interest. Just a small update:
I've finished a fairly big code refactor but still have quite a few bugs to squish before releasing it. I won't be around for the next month as I'm leaving the country next week, but will get back on this as soon as I get back. ETA for a release maybe around 2 months from now, so check back then.
very big interest (but will depend on price of course)
The release will be freeware or open source, so no cost.
there is midi katapult app on the market but it does not work when your device is named not launchpad but 4-launchpad , for example (this happens on my windows 7).
so if you manage to allow selection of launchpad port this will be very cool.
Currently it just uses the first midi device it finds with "launchpad" in the name, so it will work for your setup. This could also be extended to allow the user to select their device so that multiple launchpads could be used with 1 instance of the application for each.