The inner browser in nostrmo for mobile can run backgroundly. That you can listen the music from a share link when you doing other thing.

You can find more infomation from this:

nostr:nevent1qqsvz4mkapa84dfq54ufuvg5xh3srfrw773v9el6sdk7ar57n6z532gpzpmhxue69uhkummnw3ezumt0d5hsz8rhwden5te0dehhxarj95crztnev94kj6r0dehx2tnrdaksz9thwden5te0wfjkccte9ehx7um5wghxyee0qfqrywfnxgcrjde4v3nrsdf4vejnxdrpxa3rgdtpv3snydpjx9jnycehxsckxvehvvcrzvek8ycrzen9xsmnwvfnxdsnjvt9vgcnsc3sxup6cjxt