Hmm, the .srt files aren't supported in mobile as far as I can tell. Usually if they were, the words would pop up at the bottom of the art as the track plays. Definitely a feature request nostr:nprofile1qqswfa547pdmqkerzf2uen3agudc67wxffjmenqpge3dylc006fppyspzamhxue69uhhyetvv9ujuen0w4h8gctfdchxvmgpz3mhxue69uhhyetvv9ujuerpd46hxtnfduq3vamnwvaz7tmjv4kxz7fwwpexjmtpdshxuet5qay2nq!!

Here's an example of a self-hosted track with lyrics uploaded as an .srt file in its RSS:

https://fountain.fm/track/awPp1lcbmAfxY3b3g1uC