[masklinn]

> If you're concerned over space: storage is insanely cheap, and is getting cheaper.

Depends on the storage context.

If you want to carry a significant fraction of your music collection on a phone, lossless is not an option. Lossless is what I use for my main storage (a machine with a dozen terabytes-worth of spinning rust), but the music is converted to lossy before being synced to my laptop and phone, and I'd rather have lossy files in these contexts (whose output quality isn't exactly top-of-the-line anyway) than having to juggle external drives.

In that context, converting the lossy versions of the library to OPUS (with master files remaining lossless) makes perfect sense.

[mikevm]

I just use Subsonic to transcode on-the-fly and stream my FLAC files. On iOS there's play:Sub and on Android there's DSub.

[RX14]

That is assuming that you don't want your music available offline and you have enough data allowance. Which is not true for many people.