It's important to know the difference between mIRC and IRC. mIRC is an IRC
client that connects you to IRC itself. IRC is a
protocol. You do not connect to mIRC and no servers, channels or networks exist ON mIRC - you connect to IRC
with mIRC
With that in mind, there never has, never will be, and can't be any 'mp3 servers' on mIRC. There are channels and indeed networks that are pretty much dedicated to serving mp3s. This is however, illegal. It is also not what mIRC is for, nor what IRC is for - It means Internet Relay
Chat *hint*
It's against forum policy to help with using mIRC as an illegal file trading program for many reasons, most of which are outlined in
this post.
Regards,