> Thanks for the advice - my comment about 'high quality' was to do with the
> production values rather than sample rates - it's very difficult to get a
> half-decent slap bass sample that works all the way up the keyboard (if you know
> what I mean!) as most software sythesisers use different samples at set
> intervals which doesn't sound particularly realistic or seamless.

Yes, the QSound samples do sound quite good, though that is in part due to a fairly high samplerate and enough memory. However (dumbing thigns down so my point will be clearer), they are nowhere near the quality of modern sample libraries -- the larger ones tend to have samples for each note on each string at multiple velocities, with ghost notes and slides etc. thrown in. Given an insane amount of MIDI programming, they can sound indistinguishable from a real player. Quite another issue is that a slap bass isn't supposed to sound good outside the small range of 1.5-2 octaves or so real bass players use -- it doesn't usually sound good outside of that range on a real bass, either (unless you're Michael Manring or Victor Wooten ofcourse, but creatures like those don't count). That point is moot if you're after a synthesizer sound ofcourse, but the current batch of software synths do provide very high quality sounds (including a number of free ones).