I prefer using Quod Libet. It does take a bit of customizing, but the benefit is that you can customize everything. It also doesn't try to do anything fancy wit

I prefer using Quod Libet. It does take a bit of customizing, but the benefit is that you can customize everything. It also doesn't try to do anything fancy with tags, letting you determine the entire structure you want to use, including custom tags. It's the only credible alternative to Foobar2000 on Linux.