The MOD Archive
MODArchive is a collection of module/tracker files. It's a community project, and categorizes individual audio files. You'll need a MOD-capable audio player.
MODPlug for XMMS
VLC (built-in support)
Audio files are packaged up in ZIP files on MODArchive. While they are different formats (IT, S3M, XM, etc) they'll all carry a generic audio/mod+zip type specifier in streamtuner2 for configuration:
cd ~/Music ; wget %srv
You can use curl, or wrap the command with xterm (though files are too quick to download). A few file managers might be able to open the URLs directly even. See for more examples.