with foobar2000 or mp3tag you can add id3tags named however you want. airtime will recognize any id3tag-field you applied to the file. even if it's not default. we use a custom tag-field called "mood" and airtime recognizes it well. so if you apply a field named "showname" to a file, airtime will recognize. to have a good handling for many users, you should use a defualt field like "composer" which is usually unused. we tell our staff to use the "album"-tag for show names, because airtime has db-fields for file-uploader & file-ownership to sort by owner/uploader.
so we sort by following tags: Genre (Music: Electronic, Rock,... Misc: Show, StationID, Intro,...) Album (Music: Albumname Misc: Showname,...) Artist (Music: Track Artist Misc: Radio Station Name) then set airtime-stream-settings to if i combine this with setting airtime-stream-settings to "Show - Artist - Title", it guarantees the correct display for webstream when a preproduced show is aired.