sharing songs with telegram

[bluesscream]

There is a telegram icon in the sharing options of my spotify linux client 1.0.64.407.g9bd02c2d. Clicking it opens firefox, showing an adress beginning with tg , but then a message appears, that firefox can not handle this and I may have to install some other software. There is a Telegram client installed in my ubuntu 14.04  and the web-telegram add-on in firefox, but I have to copy the link manually. Any ideas, how to automate this?