Won't play FLAC 24/96 nor 8-ch surround files

The Zip’s flac decoder is such a mess it struggles to handle 44.1k stereo flac files. Faster stuff is probably out of the question. FWIW, we recently fixed multichannel decoding in the rockbox flac decoder, so you may be able to play those files using rockbox. However, they’ll be converted to 44.1k on the fly with rather poor quality and i’m not sure we can do all 8 channels. You will get the best results if you convert your files on the PC first. We need about 10 MHz per 44.1k/16bit channel pair. You’ve got 4 pairs at 4x the sample rate plus the overhead of mixing and resampling on a 250MHz CPU.