### Description
If the title or artist metadata in libretime has a newline, that file is
not played as telnet takes the newline as a command enter in the middle
of the command.
**This is a new feature**:
No
**I have updated the documentation to reflect these changes**:
No
### Testing Notes
**What I did:**
I spun up a fresh local LibreTime instance, uploaded a track with a
newline in the creator field. I then created a show and added the track
to the show and verified that the track did not play with error:
```
playout-1 | 2025-06-06 17:41:49,888 | ERROR | libretime_playout.liquidsoap.client._client:_set_var:50 - ERROR: unknown command, type "help" to get a list of commands.
```
I then added my fix and verified that the track did play as it was
supposed to.
**How you can replicate my testing:**
See the above section
---------
Co-authored-by: jo <ljonas@riseup.net>
### Description
The replay gain preferences are applied in the legacy code, but the
playout code was missing this feature. The replay gain was not applied
when playout fetched the schedules.
37d1a7685e/legacy/application/models/Schedule.php (L881-L886)
