Subsonic not an option under Sonos "Music Services"

Hi,
Just got the brand new Play 5, but unable to get it to work properly with Subsonic. Per the instructions at http://www.subsonic.org/pages/sonos.jsp, when i go to "Add Music Services," Subsonic isn't listed as option.
I eventually tried following the section for remote subsonic instances (at the same URL as above) and managed to get subsonic added as a custom music service, but search results from subsonic aren't showing up (although I am able to manually browse to see / play my music. I made sure that I checked the appropriate check boxes when adding the service, so not sure why it's not working.
Anyone have any ideas?
Thanks!
Frank
Update:
Here are excerpts from the log file that appear to be relevant:
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 5:05:22 PM PST] INFO SonosService No Sonos controller found
[11/19/15 5:05:22 PM PST] INFO SonosService No Sonos controller found
]
Just got the brand new Play 5, but unable to get it to work properly with Subsonic. Per the instructions at http://www.subsonic.org/pages/sonos.jsp, when i go to "Add Music Services," Subsonic isn't listed as option.
I eventually tried following the section for remote subsonic instances (at the same URL as above) and managed to get subsonic added as a custom music service, but search results from subsonic aren't showing up (although I am able to manually browse to see / play my music. I made sure that I checked the appropriate check boxes when adding the service, so not sure why it's not working.
Anyone have any ideas?
Thanks!
Frank
Update:
Here are excerpts from the log file that appear to be relevant:
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 4:56:08 PM PST] WARN SonosFaultInterceptor Error: org.apache.cxf.interceptor.Fault: Marshalling Error: null
[11/19/15 5:05:22 PM PST] INFO SonosService No Sonos controller found
[11/19/15 5:05:22 PM PST] INFO SonosService No Sonos controller found
]