added verification for midi devices

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>
removed resources from the directory (they should be external)

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>
sbt runs with akka and sound

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>