SCRoulette BUG fixing

Hello everybody!

It’s great to see how you use SCRoulette! More than 60 users.  Great! I see a lot of music. But… there is no limit to perfection. And today I found a bug.

Everybody can add in roulette non-private songs. Also it is possible to delete song from SCRoulette. But when somebody adds song in roulette and delete this song from SoundCloud profile I can not manage this. Also the owner of the deleted song may forget about his/her music in SCRoulette. So, I decided that it is right to delete song if it doesn’t exist. Thankfully to SoundCloud API I can find not existing tracks.

When somebody will start session and if he/she will find not existing track, this track will be deleted, and after a second another track will be available for listening.