May I have bees buzzing please, and airplane noises too.
Seriously none of it is for me. However, looking at my two sons play FIFA and some other something LOL does seem most games have this stuff now. No disrespect to WGT but this is way behind any of that. No clue if you can or can't do more with flash but the standards elsewhere (FIFA at any rate) are high, and these sounds seem a quickly passing novelty in comparison.
Fine if it keeps New Ideas away from the rest of the game client assuming it can't affect what is now a well functioning game (single play anyway), and elsewhere discos are way more urgent than more noises.