Would you like a cup of smug to go with your smug grin there? Seriously, in the manual it even says that there is an option to turn voice chat on/off, this just doesn't exist in the game. For once it's not Sony's fault.
Would you like some more smug? :) Great, I'm glad for you; we can't. This is the PS3 section of the forum, not the 'lets all shout at how much better my xbox is.' I can play Blu-Rays. I don't pay for my online service... Blah blah blah.
'Proper Rock Music' [What the hell is that?] isn't an Ibiza thing. Well No, it kinda is these days; ever heard of Ibiza Rocks? It's quite a large rock festival in Ibiza, I will say there's a lot of Indie kids that dig it and you might not call that 'Proper Rock Music' [i think I'll retreat to my Megadeth and Iron Maiden collection now...] but the rock station on TDU2 doesn't even come close on that scene either.
Perhaps you were expectng some trance music? Dance? Acid House? Yeah I could dig that as well, but it's not the only way Ibiza rolls.