Don't know if this is of interest, but here is another player for SDR files, with some interesting capabilities, WavViewDX.
https://rweiss.de/dxer/tools.htmlIntriguing to me is that the developer is addressing the issue of providing accurate frequency offsets using recorded IQ files from SDRs that are not locked to a reference clock, but have a reference frequency recorded in the data. Recently a number of users verified that capability using different SDRs and software.
all the best,
Nick