Better handling of looping map music

[GoogleCodeExporter]

A lot of music in games has an intro that is skipped as the song is looping, it 
might be a subtle yet nice addition to have a "Start looping from here" offset 
parameter in the Music Editor for each music id.

Original issue reported on code.google.com by skye7...@gmail.com on 26 Mar 2013 at 1:58

[GoogleCodeExporter]

I second. Music sounds much nicer when you can intro AND loop it.

To give a practical reason for this, there are some commercial music packs that 
do not allow editing of the music at all, and to loop pieces like that can 
sound really off-putting to the atmosphere. By specifying a start *and* stop 
time to the music piece, there is more indie developer content available. :)

I myself bought a high quality music pack that wasn't looped, for very cheap, 
and unfortunately it came with restrictions to any editing, and thus I cannot 
use it atm.

Original comment by kevindatapaw on 1 Apr 2013 at 3:49