If anyone can address 8 GB of sample memory in a G5 / 10.4.2 / Logic 7.1, I'd love to hear about it. But I don't think it can be done presently. It pins out at around 3.7 or so, no matter how much memory you have. Someday, that will change.
EXS is a component of Logic, and you can't get one without the other (anymore).
It's not easy to find "deals" on anything related to Apple. Currently there's a 500 USD rebate for buying Logic and a G5 2.3 together.
Installing is the easy part. Beyond it, there is a learning curve, and it can get steep when dealing with multiple instances on a single track (which is how most orchestral composers approach EXS).
Beyond that, most users buy a sound card. Otherwise, you'd be limited to the G5's built-in audio out.
EXS is a component of Logic, and you can't get one without the other (anymore).
It's not easy to find "deals" on anything related to Apple. Currently there's a 500 USD rebate for buying Logic and a G5 2.3 together.
Installing is the easy part. Beyond it, there is a learning curve, and it can get steep when dealing with multiple instances on a single track (which is how most orchestral composers approach EXS).
Beyond that, most users buy a sound card. Otherwise, you'd be limited to the G5's built-in audio out.