it depends on the sound card used and the distro/sound driver.
There are various options you can uncomment in the snowglobe startup script that might help.
Mine was solved on my last computer with uncommenting the option to avoid using bad openal drivers.
Current laptop the sound is perfect.
Edit to add: currently the only linux sl client that shows the stream info is Imprudence,even though the linux builds of firestorm/Phoenix and Kirstens have an option to enable it.