Mark,
this is a standard HTTP-request for an m3u in displayserver : 


GET /ds-bin/getfid?output=m3u&savefile=ttt&fid=9ed HTTP/1.0

Host: empeg



HTTP/1.1 200 OK

Server: EmpegCar DisplayServer/1.1 (Linux)

Connection: Keep-Alive

Content-Type: audio/x-mpegurl



http://empeg/ds-bin/getfid?output=m3u&fid=9ee

http://empeg/ds-bin/getfid?output=m3u&fid=9f6

http://empeg/ds-bin/getfid?output=m3u&fid=a09

http://empeg/ds-bin/getfid?output=m3u&fid=a19

http://empeg/ds-bin/getfid?output=m3u&fid=a28

Connection closed by foreign host.
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Frank van Gestel