"audio/sp-midi",
				"audio/t140c",
				"audio/t38",
				"audio/telephone-event",
				"audio/tone",
				"audio/ulpfec",
				"audio/vdvi",
				"audio/vmr-wb",
				"audio/vnd.3gpp.iufp",
				"audio/vnd.4sb",
				"audio/vnd.audiokoz",
				"audio/vnd.adobe.soundbooth",
				"audio/vnd.celp",
				"audio/vnd.cisco.nse",
				"audio/vnd.cmles.radio-events",
				"audio/vnd.cns.anp1",

	}
	if err != nil {
		return osErrToFileErr(err)
	}

	var bufp *[]byte
	switch {
	case fileSize <= xioutil.SmallBlock:
		bufp = xioutil.ODirectPoolSmall.Get()
		defer xioutil.ODirectPoolSmall.Put(bufp)
	default:
		bufp = xioutil.ODirectPoolLarge.Get()
		defer xioutil.ODirectPoolLarge.Put(bufp)
	}

	var written int64
	if odirectEnabled {