For (1), use either no option, in which case you get the default,
decent-quality resampling filter; use the -a option for a better
quality filter; or use a combination of the -f, -b
and -l options
to design your own filter.
For (2), use the -i option.
Options: -a triple-A quality resampling filter OR: -f NUM rolloff Frequency (0 < freq <= 1) [default: 0.9] -b NUM Beta ( >= 1) [default: 9.0] -l NUM filter Length (odd number <= 65) [default: 65] -n No interpolation of filter coefficients (faster) -i resample by linear Interpolation, not with filter -t Terse (don't print out so much) -v print Version of program and quit If no output file specified, writes to "inputfile.resamp".