Suddenly getting 404 errors

[jsaken]

Subsonic had been working beautifully, suddenly I'm getting HTTP 404 errors trying the access the music files, when I try to add them to a playlist or play them. I CAN access them from the command line and play them with mpg123. The music files are kept on a networked drive. Every system, include the subsonic server box, seems to have no trouble accessing them from a command line.

Sample of the error:
HTTP ERROR: 404
NOT_FOUND
RequestURI=/media/music/CD/Keb_Mo/Keep_It_Simple/01_France.mp3

Subsonic version: 4.6 (build 2583) – December 6, 2011
Server: jetty-6.1.x, java 1.6.0_27, Linux (38.2 MB / 49.3 MB)

Output from uname -a: Linux Fossil 2.6.36-1-mepis-smp #1 SMP Thu Mar 31 17:07:18 CDT 2011 i686 GNU/Linux

Last lines from log file:

[2013-07-21 12:59:07,992] INFO DaoHelper - Checking database schema.
[2013-07-21 12:59:09,950] INFO DaoHelper - Done checking database schema.
[2013-07-21 12:59:11,547] INFO SearchService - Automatic index creation scheduled to run every 1 day(s), starting at Mon Jul 22 03:00:00 EDT 2013
[2013-07-21 12:59:12,161] INFO PodcastService - Automatic Podcast update scheduled to run every 24 hour(s), starting at Sun Jul 21 13:04:12 EDT 2013
[2013-07-21 12:59:20,380] INFO NetworkService - Successfully forwarding port 4040.
[2013-07-21 13:00:08,225] INFO VersionService - Resolved local Subsonic version to: 4.6
[2013-07-21 13:00:08,610] INFO VersionService - Resolved latest Subsonic final version to: 4.8
[2013-07-21 13:00:08,623] INFO VersionService - Resolved latest Subsonic beta version to: 4.7.beta3

Any clues as to the problem would be greatly appreciated.

Thanks.