Why does the ア in シャツ sound like エ ?
I hear it slightly. That can happen sometimes depending on the accent.
Sorry. Don't hear it. ふるくない does sound a little like ふりゅくない though.
On Duolingo's audio it really does. I believe every language voices a letter occasionally different than what it should be. It must not be anything to worry about... I think.
The lack of Kanji gets the phrase compliceted. It is hard to tell where the different words ends or begins.