Howdy all, The support kit provides the BDataIO class, extended with seeking in the BPositionIO class, which serves its purpose for simple IO. However many plug-ins insist on seekable content by accepting only a BPositionIO. The closest solution to the streaming data construct is the BBufferIO, which allows the buffering of data, but AFAIK it's missing the crucial freeing part: freeing already read data, and avoiding using too much memory in the process. I tried writing my own subclass, where the readat function would return an equivalent number of blocks from the disk, but I think the producer should really be independent from the consumer in this kind of data interface. Now, I think that a class inheriting BPositionIO that directly implements the standard iostream class, with the general read and write function, but with little or no actual seeking capacity, should do the job. However I could be wrong... -- Cheers, Christopher