New feature: Select sound

Finally TiltOPhone have the possibility to exchange the guitar sound for some others, including : Piano,  Xylophone, Rock Organ, Violin, Synthesized Oohs, Trumpet and finally Guitar.

At any time it is possible to change sound/instrument. The change takes some time. It will shut up for a bit, but carry on playing when the new sound is loaded.

Go ahead and try it out!