Add audio output in example player

This revision is able to load and play modules using the native library.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Add .gitignore

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Add license text

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>