Get Icecast2 to collect a feed from Nicecast

You don’t need to specify the listen.m3u in the config file

Just use a slash /

<relay>
    <server>tributary.rave.ac.uk</server>
    <port>8150</port>
    <mount>/</mount>
    <local-mount>/rave.mp3</local-mount>
    <relay-shoutcast-metadata>0</relay-shoutcast-metadata>
</relay>