Another tip, for production.
You've spent a while creating your 32 channel module and want to render it to disk so that you can convert it for your .
Unless you are using RTG or a high scan rate native resolution, the chances are you've had the mixer running at 27-28kHz ish and without smoothing enabled because even on a fast UAE, that many channels running with smoothing is going to be a pain.
What I always found was that I'd tend to play bright sounds, like high hats and cymbals at notes that had replay rates close to the mixing rate simply because they sounded best at that rate. For example, the "A-5" note for an untransposed sample in mix mode is quite close. This reduced distortion and made the realtime playback nicer to listen to. On a more technical note, it probably causes the sample-rate conversion aliasing frequencies to be closer to the fundamental.
However, you don't want to render your track at 27.x kHz, you want to render it at 44.1kHz or 48kHz, with smoothing for mastering. What you will then discover is that your track sounds kinda dull, like everything has gone through a low pass filter and your shiny high hats have lost their lustre. Soft pads, bass and stuff will sound fine however.
The reason for all this is that at 44kHz, your 27kHz A-5 note is interpolated by the smoothing algorithm. It's also not a rational fraction of the output rate, so the highest frequency changes in the original note just can't be reproduced.
There is a trick to all this. If you can use a mixing rate close to 44kHz when composing, then try to do that. However, if your are using a slower CPU this really might not be an option.
A better trick is to get some high quality 44kHz samples as your "master set" for things like cymbals or other bright sounds. Then create a lower sample rate version (you can use the sample editor to resample them to close to whatever realtime mixing frequency you use) and do your composition. You'll have to set the instrument properties transpose on them so you can keep the original F-6 (about 44kHz) note in your track, but it will replay your resampled sound at around A-5.
Once you are happy, reload the 44kHz version of the sample and remove the instrument properties transpose. When you render your track to disk now, these bright sounds should remain much brighter.
