I've set DSP Studio to Source Bitdepth, and 5.1 output with JRSS. If I play a 16-bit FLAC, it outputs correctly at 16-bit. If I then go on and play an MP3 file, it is output at 24-bit. I assume this is correct for MP3, since 24-bit is the maximum bit depth my sound card supports. However, after having played the MP3, the setting on DSP Studio changes automatically to 24-bit, so if I try to play FLAC again, the output is 24-bit.