private synchronized void play(int index, boolean start) {
if (index < 0 || index >= size()) {
reset();
setCurrentPlaying(null);
} else {
setCurrentPlaying(index);
checkDownloads();
if (start) {
if (jukeboxEnabled) {
jukeboxService.skip(getCurrentPlayingIndex(), 0);
setPlayerState(STARTED);
} else {
bufferAndPlay();
}
}
}
}
