Check which filters/codecs are used by BS.Player for files which don't have the problem as mentioned by you and whether BS.Player uses other filters/codecs for files which are 'problematic'.
(Also look for differences with BS.Player on your laptop.)
To find out (while the file is loaded/playing):
rightclick > Options > Filters > Advanced
Then click on "Source" and on the +signs in front of the filters/codecs shown in order to get further info (and further access).
Any difference between the problematic and non-problematic files?
Please report back what your findings are.
