[Kurtnoise]

Originally Posted by Sirber

seems mkfifo is linux only

Yep...doesn't work on Windows plateform.

Here is the HE-AAC encoder (sources included) with some tweakings:

Usage:
        enhAacPlusEnc.exe <wav_file> <bitstream_file> [options]
Options:
        --cbr <bitrate> - Set bitrate (CBR) to <bitrate> bps. Default is 64000
        --force-mono    - Force mono encoding for stereo material
        --disable-ps    - Disable Parametric Stereo encoding
        --no-progress   - Disable progress display
Example:
        enhAacPlusEnc.exe input.wav out.m4a --cbr 56000

WARNING: this encoder can read and encode RAW PCM data from stdin:
        use - as input filename
Use additional options:
        --samplerate <rate>     - Default is 48000
        --channel-count <cnt>   - Default is 2
        --bits-per-sample <bp>  - Default is 16
Example:
        enhAacPlusEnc.exe - out.m4a --cbr 56000 --samplerate 44100 --channel-count 1

Target bitrates have been also tweaked to go up to 72kbps...