at a time is supported and volume as well as start time are not taken into
account. For reasons I don't feel like investigating right now all the
BMediaTrack calls in the BTrackReader end up as pure virtual function calls
though, so it's unusable for now.
* Fix leaking the temporary buffer in BSound.
* Whitespace cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29374 a95241bf-73f2-0310-859d-f6bbb57e9c96