Ok checked your site Chris, but do yourself a favour. When you talk about high quality mp3, then do high quality mp3.
The Idea is not that bad between. But quality...
I do not hope you recorded direct from the Amiga Audio Outputs, and if yes, even then it could be done better.
As far as I know any PC Mod player can render Modules to a WAV or AIFF stream, if you use an Amiga for playing, the Protracker Modules could be renderd to higher quality with DigiboosterPro for example.
If you want to use a real Amiga wich should be recorded realtime, try to warm the sound a little bit up by using a real Analog Mixing desk before you put the stream to a PC Soundcard.
The streams on your website are mostly 128kbit mp3 ok... but seems you recorded from a audiotape, or you did to much denoise to a final WAV stream, both will do heavy unregular dephasing in the final mix.
You should record normal in 16bit 44,1khz, perhabs only a little bit Bandpass filtering to minimise critical noise, the rest should stay as it is. Recording in 24bit makes no sense, course quantising noise from downsampling to 16bit will only make the sound even worster, better stay 16bit and good.
But best way would be recording over a PC Module player, there the algorithms for bit quantsing from 8 to 16bit are good enough for good quality of course.
Sorry did not find any information on your site how you did the mp3, let us know perhabs we can help you more for "high quality"