[Matthewlawson3]

well, I'd actually do as @gimmeheadroom suggests. first make sure they're actually taking up the size of a 32 bit file. see if you can encode two or three songs from a disk you have using the standard FLAC parameters: 16 bit / 44.1khz / level 7 compression. Compare the size (file properties) of the newly ripped FLACs to same old FLACs. You may notice negligible differences due to metadata and compression levels - but they should be pretty close in size. If old FLACs are much bigger, then you're just wasting space, and yes, you should re-encode them. Otherwise, I'd leave them be personally.

So I ripped the same track using DBPowerAmp CD ripper to FLAC and the size is not much different at all. The new FLAC is 25.6 MB and the old FLAC is 25.3 MB. After looking at the audio details of the old FLAC file by right clicking on the file, going to properties, then audio properties, it says it is indeed 44.1 KHZ sample rate and 16 Bit sample size after all.

 

[gimmeheadroom]

If your devices can all play the 32 bit version then you're good to go

 

[Matthewlawson3]

Great! When I play most of files in Hiby music app or in ONKYO HF it says the files are 44.1 KHZ and 16 bit but then the programs say output of these are 32 bit PCM. But yes they are playing.