The robotic sound can be a bit misleading... The Finnish "s" is quite sharp, like in BrE "sea" or "see".
Does "s" sound like portuguese "ch or x" here??
Neither. It's like the 's' in 'same'.
The computer voice indeed adds some kind of weird extra sound in front of the s so that it sounds "xsinä". Lutay_ has explained it well. It's like s in "same".
I think neither exactly.
I thought I was supposed to complete the sentence so I put Tyyne like in similar sentences I saw. :-/
Oh no/oh well...
I'm a bit confused here. Is the 't' in 'olet' silent?
No, there's not much silents anyway, usually everything is pronounced just as it's written.