My recommendation is to use Live - Styler or OMB connected via virtual cables (Midi Yoke, Maple or others) to a host (forte, console and others). In the host you can install your VST Sampler or Sample Player and load up your Wavetables (soundfonts SGM180, sYnergiGS, and others (Hypercanvas, M-Audio, etc.)). However, many of these wavetables are not XG compatible and as result you need to edit the styles to make them so (drums, voices, effects).
If you don't do this it will sound sad, dry and so on. Pianos will be playing where drums should be sounding. Hands clapping and dogs howling where other prestine instruments should be playing. What do I know? You might like this.