Adding Sounds to R2 Touch
R2 Touch remote controls the sounds in your R2 via the MarcDuino and your R2 sound system, but is can also play the R2 sounds on the iPhone itself. You can use this to make an ultra simple sound system using a Bluetooth speaker in your Droid, or just for fun for making your iPhone sound like R2.
However, no sound is distributed with the app for silly copyright reasons. You have to upload your own sound files to the app before local sounds can play. The mp3 sound files you need for the iPhone are the exact same as the ones used for the MP3 Trigger sound system, and use the same naming convention. So the easiest method is just to use the default MP3Trigger library of sounds and upload it to the iPhone, as explained below.
Sound files package download:
Download and unzip the MP3Trigger sound file library .
Install in the app through iTunes:
Connect your iPhone device to a computer running iTunes. The exact details keeps changing all the time, but the general method is the same: transfer the files to your app as you would for any file sharing application.
Click on your device in the left tab. Scroll all the way to the bottom. The R2 app will appear as a file sharing app. Click on it. A list of the files used by the app should appear, you should see some setting files already, this is normal.
Select all the files from sound archive that you just unzipped and drop them in the R2 Touch Documents window to add them to the app documents.
Sync your iPhone with your computer.
Start R2 Touch. You should be greeted by the startup sound. If not, go to the R2 Touch wrench, make sure the "Play Sounds on iPhone" is turned on.
The sounds on the iPhone work exactly the same way as the MP3Trigger sounds (actually the sound engine on the iPhone is an emulator of the MP3Trigger board). To modify an existing sound, just replace the file with your own mp3 with the same file name. To add more sounds, create new mp3 files using the exact same naming convention described on the MP3Trigger Sound page. Replace/add the R2 Touch sound files via iTunes method described above and resync your phone. Modify the name of the sound buttons as described in Customizing R2 Touch.