Any ideas on the best way to pronounce this? It seems to me that it's not easy to really emphasise the fact that there's a T there. If you pronounce it like English it would sound like "maĉo" which it isn't, and mat-ĉo seems really clunky.
Each letter is pronounced only one way and each letter is pronounced. Like Scii comes out as "S-ts-ee-ee". I had a bit of trouble with that at first until I remembered that the "sc" would be like the "sts" in "lists". I imagine I'd pronounce matĉo like "matercho" a little bit.
The best way to pronounce it is to follow the italian model like in "tutto". OK, if you don't speak italian it doesn't help :) In order to do so, you don't really pronounce two consonants, but you stick your tongue and do a very short pause instead of pronouncing the first consonant : "ma(t)-ĉo". If you want to read more about "gemination" (double consonnants) you can read this page: https://en.wikipedia.org/wiki/Gemination#Italian