hi wig
vbr (variable bit rate) is supposed to have a number of advantages, if you importing music which varies between say a single simple voice to more complicated multi layered sounds, then the bit rate, as it states, varies in quality depending on the type of music, the advantages of this is that files are copied at a more optimum rate to ensure that they are not larger than necessary and that periods of more complicated music are increased in quality. for example 256kbs cbr may actually work out as 290 kbs in variable. Regardless of the 'science' behind it, you should mayb e try importing some songs in both cbr and vbr at the same bit rate and see if you can spot any difference, otherwise the process will just be academic from a sound quality point of view, albeit it will optimise space usage on your nano.
