OK. sorry for my bad description (and also for my bad English. :-D )
A Wavefile could save looparkers (created for example with wavelab). It is possible to set a start- and endvalue. almost every vst sampler could read them, play this wave from start and if it reach the loop-end point, the readpointer jumps back to the loop-start point. it would be nice, if it is possible to 'read' these points from a wavefile.
It currently reads some metadata like BWAV, Acid, etc, but not sure whether those contain loop points.. Do you know what the chunk type is that contains the info you're looking for? I wouldn't mind adding it if there's one that's commonly used.
Oh yes - it already supports that. Have a look at the SMPLChunk class for more info. Getting the correct names for all the loop metadata is a bit messy, but it's there.