I am reporting on this bug, because I am expecting JW player to be able to play files with accents in their filename, but it does not.
Steps to reproduce :
I have uploaded to the Media library mp3 files containing french language é accents. After inserting a [jwplayer mediaid="somenumber"] through to the tinyMCE's "Add sound" > Library > "insert JW player" button, a flash player widget does show up on the page but when clicking the play button, the latter doesn't not remain in playing state and nothing gets played.
As a temporary fix, I have managed to get my files to play by removing accents in their FTP filename.
Thanks in advance for the plugin and on behalf of everyone using this plug-in !