"audio/it+zip": "mod",
    "audio/s3+zip": "mod",
    "audio/xm+zip": "mod",
}

# Player command placeholders for playlist formats
placeholder_map = dict(
    pls = "(%url | %pls | %u | %l | %r) \\b",
    m3u = "(%m3u | %f | %g | %m) \\b",
    xspf= "(%xspf | %xpsf | %x) \\b",
    jspf= "(%jspf | %j) \\b",
    asx = "(%asx) \\b",
    smil= "(%smil) \\b",
    srv = "(%srv | %d | %s) \\b",
    pls = "(%url | %pls | %u | %l | %r)",
    m3u = "(%m3u | %f | %g | %m)",
    xspf= "(%xspf | %xpsf | %x)",
    jspf= "(%jspf | %j)",
    asx = "(%asx)",
    smil= "(%smil)",
    srv = "(%srv | %d | %s)",
)

# Playlist format content probing (assert type)
playlist_content_map = [
   ("pls",  r""" (?i)\[playlist\].*NumberOfEntries """),
   ("xspf", r""" <\?xml .* <playlist .* ((?i)http://xspf\.org)/ns/0/ """),
   ("m3u",  r""" ^ \s* \#(EXT)?M3U """),

    # Add default %pls if cmd has no %url placeholder
    if add_default and cmd.find("%") < 0:
        cmd = cmd + " %pls"
        # "pls" as default requires no conversion for most channels, and seems broadly supported by players

    # Playlist type placeholders (%pls, %m3u, %xspf, etc.)
    for dest, rx in placeholder_map.items():
        rx = "(?<!%%)%s\\b" % rx
        if re.search(rx, cmd, re.X):
            # no conversion
            if conf.playlist_asis:
                url = row["url"]
            # e.g. from .m3u to .pls
            else:
                url = convert_playlist(row["url"], listfmt(source), listfmt(dest), local_file=True, row=row)
            # insert quoted URL/filepath
            return re.sub(rx, quote(url), cmd, 2, re.X)
            return re.sub(rx, quote(url), cmd.replace("%%", "%"), 2, re.X)

    if not add_default:
        return cmd
    else:
         return "/bin/false"