Add platform default charset override to players
First reported [here](https://www.snakeoil-os.net/forums/Thread-Minimserver-doesn-t-scan-folders).
Some players don't work if you're using ASCII. Adding LC_ALL and LC_CTYPE environments usually fixes things, e.g.,
LC_ALL="en_US.UTF-8" LC_CTYPE="en_US.UTF-8"
I should make this an option and make that available to all players.
issue