try use ffmpeg (latest version)
Code:
ffmpeg -i "rtmp://cdn-the-2.musicradio.com:80/AOD/mp4:7B91EAA125D34C3AAA3A95E4A8EB4F57.m4a" -vcodec copy -acodec copy t.m4a
Code:
General
Complete name : C:\Documents and Settings\Администратор\Рабочий стол\t.m4a
Format : MPEG-4
Format profile : Apple audio with iTunes info
Codec ID : M4A
File size : 1.26 MiB
Duration : 3mn 36s
Overall bit rate : 48.9 Kbps
Writing application : Lavf54.1.100
Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : 40
Duration : 3mn 36s
Bit rate mode : Constant
Bit rate : 48.0 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz / 22.05 KHz
Compression mode : Lossy
Stream size : 1.21 MiB (96%)