A net search for +trad+jazz+midi (or +"trad jazz"+midi if you prefer) will turn up a lot of midi arrangements (eg
Traditional Jazz Midi Files). If you have a notation package or a sequencer with notation facility, you can import these and see the arrangements they use (if you like them). (I've been using Finale Guitar recently. It's a fraction of the price of the full Finale package and despite it's name is a full general purpose notation package and has virtually every facility you'll want - only curious omission for a guitar package is lack of string indicators (numbers in circles) in the fonts, but you can create your own or download free fonts with those in).

Mick