optical cables and soft/hard subtitles ??``

[Jonny04]

I am trying to get due to a lack of cables and a lot of games to buy, a quick solution for my 360 audio. I have RCA going to my TV via the 360 component cable, if I were to output the sound to my amp, via digital optical output (the optical being on the TV, and being run to a optical in on the amp). I should get 2.1 sound from the optical, its the only option I have with the cables I have got at the moment, until I buy the Elite and use HDMI/ and an optical cable (I can get 5.1 from the 360). So basically any one know if that would work? ?

My second thing is my 360 doesn't want to display I think the term is soft subtitles, for example on the Bourne ultimatum , every time it goes to new locations it makes a noise, and sorta does a typewriter subtitle effect saying "Waterloo station, south entrance, " or "CIA HQ, Virginia" whatever, any way to get them displaying or is just a limitation of the player?

All help is appreciated.