Complex sentence: Since his death, James's music has become more available and prevalent than during his lifetime--his 1931 recordings, along with several rediscovery recordings and concerts, have found their way onto numerous compact discs, drifting in and out of print.
Split into simpler sentences: Since his death, James's music has become more available than during his lifetime. His 1931 recordings and several rediscovery recordings and concerts have been reissued on numerous compact discs, in and out of print.