Allow to upload WAV files with 32 bit float uncmopressed audio

This is also an uncompressed audio, but the name that getID3 returns
is different.

When playing such a file mplayer shows:

Opening audio decoder: [pcm] Uncompressed PCM audio decoderAUDIO: 44100
Hz, 2 ch, floatle, 2822.4 kbit/100.00% (ratio: 352800->352800)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)

Bug: 60015
Change-Id: I93dc2a3fe87067411d2719a9f981024c074d0cbc
Merge "Allow to upload WAV files with 32 bit float uncmopressed audio"