Where do you upload the tracks? And how do people stream them easily? Through the nostr client?
This. Make a new npub for music, only upload tracks. These become your podcast feed through Castr.me
The nostr:npub1tn2lspfvv7g7fpulpexmjy6xt4c36h6lurq2hxgyn3sxf3drjk3qrchmc3 podcast feed for instance.
https://castr.me/npub1tn2lspfvv7g7fpulpexmjy6xt4c36h6lurq2hxgyn3sxf3drjk3qrchmc3
Discussion
post the raw file to the nostr timeline and add the RSS Feed that castr.me gives you to a podcasting app. PodcastGuru handles these well and has video.
https://castr.me/npub1tn2lspfvv7g7fpulpexmjy6xt4c36h6lurq2hxgyn3sxf3drjk3qrchmc3/rss.xml
heres a movie from that feed right in that app.

So the music would be hosted on nostr.build if I understand correctly ?
Yes. For that you would want to compress to mp3 or AAC, depending on what's supported. Higher quality mp3 vbr, or AAC.
I know nostr.build supports mp3. I've uploaded them before.
Does that only work with a paid nostr.build account?
I'm pretty sure mp3 is supported on free tier.
nostr:npub137c5pd8gmhhe0njtsgwjgunc5xjr2vmzvglkgqs5sjeh972gqqxqjak37w can you co firm?
If it doesnt work... can I zap you and pay for a month of nostr.build premium for nostr:npub1rzg96zjavgatsx5ch2vvtq4atatly5rvdwqgjp0utxw45zeznvyqfdkxve?
Audio is supported and always has been. We even have a player https://e.nostr.build
If you have questions let me know. I used to rip and upload a lot of albums to what.cd 😂
yeah wherever your post lives. It just pulls in the mp3s, mp4s and mp4as from your nostr profile.