nostr:npub1vh7lcmjsxa7gp3fayz7a4l5vw5vhlggkvg0xrxl9xldkcarrc32qvh9y5a nostr:npub1xanjytp3clslynd2hxlnxg32jzz9wafxj9g4x6k28sjgljasd8wq3qjlvy USE OPUS use opus it takes 0.00001% less disk space compared to mp3 and some android players can't use it (good thing,filtered) and is a Free Format