.m4a file format problem solved

[Jude DaShiell]

Those .m4a files don't play very well with mplayer or mpg321 however a 
solution for debian users exists.  The dir2ogg package can convert this 
.m4a format and other formats into .ogg files.  For .m4a the file first 
gets converted to .wav format and from .wav to .ogg format.  The command 
line podcast uses .m4a files and surprisingly is worth a listen if you're 
at all technically inclined.