Changes to WAV transcoding in MinimStreamer 2.1

[simoncn]

*:wav transcodes network streams of unknown type, not all network streams. A network stream is of known type if the type is specified in the .m3u file. For example, the stream

#EXTINF:-1,[Linn] Linn Radio Classical
http://radio.linnrecords.com/cast/tunein.php/linnclassical/playlist.pls

has unknown type and would be transcoded by *:wav. If instead this stream were specified as

#EXTINF:-1,[Linn;mp3] Linn Radio Classical
http://radio.linnrecords.com/cast/tunein.php/linnclassical/playlist.pls

the stream would have the known type mp3 and would not be transcoded by *:wav.