Bug#483451: fretsonfire: guitar track not heard; background track used as guitar track

[Timo Jyrinki]

The bug occurs also with 1.2.512.dfsg-3, and only on amd64 (only tested
i386 and amd64). A workaround is to change audio sample size from 16-bit
to 8-bit in audio settings.

Bug 1781073 [1] in project's bug tracker sounds like similar, though the
solution does not solve the actual problem if the original reporter had
this bug in question.

[1]
http://sourceforge.net/tracker/index.php?func=detail&aid=1781073&group_id=182199&atid=900254

-Timo