Hi Brian,

I really don't know the legal answer here due to the fact that a) I am not a lawyer and b) EU law differs from US law and the laws in your state :).

I would wager that you probably don't have the right to find the higher quality versions but again not a lawyer. However, if it's a soundtrack made from in-game music and you have the game legally purchased and you see that the game's files contain WAV files (lossless but very large music files) I think you are legally allowed to convert those files to a format of your choice for personal use

Again, I would really like to stress that you check the US laws regarding this because I really don't feel comfortable stating something definitive about a tricky legal issue such as this.