What are the best settings to go for when playing back MP3s, watching internet videos and the occasional DVD on the Laptop.I am using a Dell Inspiron 1545 Laptop with a pair of M-Audio Studiophile AV 40 speakers connected via the 3.5 headphone socket of my laptop to the phono L+R line in socket on the speakers.There is 16-bit and 24-bit options along with their Hz setting in the Windows Speaker section.Which is the best bang for buck in terms of performance that will not impact audio quality.I have heard that selecting setting other than the source will result in up-sampling or down-sampling which will cause extra processing and hence result in quality loss, is this true or just a load of bull?