Some help needed

Hello there,

I'm a newcomer to the synology world (although I know my way around GNU/Linux boxes) and I feel that I could use some help because all the shiny features and screens of DSM confuse me a lot.

1- I have a remote webdav server which I want to sync bidirectionally. I finally got that to work using the "Cloud Sync" app, and the files are replicating into my home folder. Within this folder, I have a "Holidays" photo folder which I would like to make available to my smart TV over DLNA, and ideally to the "Photos" app, is there a way to do that? I resorted to SSH into the DS to create a bind mount between "Holidays" and /volumeXYZ/photo/ but the only photo I can see over DLNA is the dummy I uploaded from DSM and messing with permissions doesn't seem to help.

2- I have a remote server from which I want to rsync periodically to back-up a collection of music files, and, similarly those files should become available over DLNA and to other users of DSM. "Active Backup for Business" seems decently featured, it even lets me pick a destination folder, which I specified to be "/music". And now it happily created a mess of what appears to be temp/lock files and config within /music.

In general, what brought me to buying this nas was to have an off-site backup of a server which could double as a media server at home using the same data. So far this experience has been exceedingly frustrating.