This is a pretty cool soundfont, and the samples sound really well-looped and well-made!
I don't notice any clicking or weird issues with loops currently with the Bassmidi driver but I think my driver is a little broken, since it doesn't seem to want to switch to the sync interpolation option, which is where loops often break. . I do know that Virtual Midi Synth also uses Bassmidi, so it doesn't surprise me that you are having problems if you are using sync interpolation with it.
From my own testing with wavetables and the like, and if you're using sync interpolation especially, clicking or buzzing loops often occur if the loop start or end is directly at the start or end of a sample. The loop could sound fine in an audio editor but may click with Bassmidi. The solution is to not put loops at the start or end of the sample. Copy-pasting the loop to allow for some padding is normally what I do. About 5 samples of data before and after the loop should do, but a few more than that won't hurt to be safe, and besides I think the soundfont spec actually calls for that but a lot of players don't make it a requirement.
I could fix the samples for you if you don't want to, but it would take me a while to get to it since I am doing other things right now, so I wont promise anything, but if you like, I will look into it and see what comes of it.
Make more of less, that way you won't make less of more!
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