This allows the user to control playback for the internet radios, which
were previously started outside of the main player without any
possibility for direct control.
I threw airsonic at IntelliJ's IDEA analysis,
and asked it to flag what could be modernized
for Java > 5.
- foreach instead of for…
- I added some null-deref checks
- Integer.ValueOf, since Integer(…) is deprecated
- Contextual try
- Objects.equals instead of handcrafted comparisons
- StringBuilder instead of StringBuffer
- Removal of outdated/wrong javadoc comments